Merchant Marine & Maritime Commerce

The U.S. Merchant Marine — the fleet of civilian cargo ships and their crews that transport goods in commerce — is governed by Title 46 of the U.S. Code and regulated by the Maritime Administration (MARAD) within the Department of Transportation, the U.S. Coast Guard for safety and port security, and the Federal Maritime Commission for shipping competition. American maritime commerce spans 400+ ports handling over $1.5 trillion in annual trade, with the Port of Los Angeles/Long Beach alone processing more than 20% of all U.S. container imports. The U.S. oceangoing merchant fleet has declined dramatically from its post-World War II peak — from over 1,000 vessels in 1945 to fewer than 180 oceangoing ships today, reflecting the competitive disadvantage of U.S. operating costs relative to foreign-flagged competitors. The Maritime Security Program (MSP) pays subsidies to approximately 60 U.S.-flagged commercial vessels to keep them available for national defense sealift missions; without these subsidies, the commercially viable U.S. fleet would be too small to support military logistics in a major conflict. The Jones Act (46 U.S.C. § 55102) protects domestic coastwise trade from foreign competition. Port security is governed by the Maritime Transportation Security Act of 2002 (46 U.S.C. §§ 70101–70125), which requires facilities and vessels to have security plans, undergo vulnerability assessments, and implement access controls following post-9/11 concerns about container shipping as a terrorism vector.

Current Law (2026)

Legal Authority

• 46 U.S.C. § 50101 — Merchant Marine Act objectives (United States must have a merchant marine sufficient to carry domestic waterborne commerce and a substantial portion of foreign commerce; serve as a naval auxiliary in time of war; built and operated by U.S. citizens)
• 46 U.S.C. § 2101-2116 — Vessel safety (definitions; vessel inspection; manning requirements; safety equipment; Coast Guard authority over vessel design, construction, and operation)
• 46 U.S.C. § 8101-8106 — Manning of vessels (minimum crew requirements; citizenship requirements for officers; watches; pilotage)
• 46 U.S.C. § 50101-50111 — Maritime promotional programs (Maritime Security Program; operating differential subsidies; construction subsidies; cargo preference)
• 46 U.S.C. § 53101-53111 — Maritime Security Program (stipend payments to operators of militarily useful U.S.-flag vessels; vessels must be available for DOD activation; 60-vessel fleet)
• 46 U.S.C. § 70101-70125 — Port security (maritime transportation security plans; facility security plans; Transportation Worker Identification Credential — TWIC; Coast Guard inspections; area maritime security committees)
• 46 U.S.C. § 12101-12152 — Vessel documentation (U.S.-flag registry; coastwise, fishery, and registry endorsements; citizenship requirements for vessel ownership)
• 14 U.S.C. § 524 — Coast Guard enforcement of coastwise trade laws (Coast Guard enforces Jones Act cabotage requirements; Secretary must establish enforcement program)
• 14 U.S.C. § 1151/1153 — Domestic construction and repair requirements (Coast Guard vessels must be built in U.S. shipyards and may not be overhauled in foreign yards — reinforcing the maritime industrial base the Merchant Marine Act protects)
• 14 U.S.C. § 312 — Prevention and response workforces (Coast Guard creates career paths for marine safety and environmental response personnel — the workforce that inspects vessels, licenses mariners, and responds to maritime incidents)
• 14 U.S.C. § 562 — Marine safety appeals and waivers (decisions on inspections, crew rules, and environmental risks must be made by trained marine safety specialists with demonstrated expertise)

How It Works

Federal maritime law governs the registration, safety, manning, and commercial operation of vessels in U.S. waters and the U.S.-flag fleet worldwide. It also provides for the maintenance of a merchant marine capable of serving as a defense logistics asset and establishes the security framework for the nation's ports.

Congress declared it national policy to maintain a U.S. merchant marine — a fleet of U.S.-flag commercial vessels — sufficient to carry a substantial portion of foreign waterborne commerce, owned by U.S. citizens, and available as a naval auxiliary in wartime. In practice the U.S.-flag international fleet has shrunk from over 1,000 oceangoing vessels in the 1950s to roughly 180 today, as foreign-flag operators with lower costs dominate global shipping. The Maritime Security Program (MSP) bridges that gap by paying ~$5 million annually per vessel to 60 commercially viable U.S.-flag ships to keep them available for Department of Defense sealift activation. Federal law further supports the fleet through cargo preference requirements directing that a percentage of government-impelled cargo — military shipments, food aid, government purchases — must move on U.S.-flag vessels, supporting the fleet at the cost of higher government shipping rates.

The Coast Guard enforces vessel safety and manning standards under authority granted by 46 U.S.C. Chapters 33 and 71 — inspecting commercial and passenger vessels, enforcing SOLAS and MARPOL conventions through Port State Control for foreign vessels calling at U.S. ports, and issuing Merchant Mariner Credentials to the approximately 80,000 active U.S. mariners who operate the fleet. Officers on U.S.-flag vessels must generally be U.S. citizens; credentialing requires training, sea service, physical fitness standards, and drug testing consistent with international Standards of Training, Certification and Watchkeeping (STCW). Port security operates under the Maritime Transportation Security Act of 2002: maritime facilities and vessels must implement security plans, port workers with unescorted access to secure areas must hold Transportation Worker Identification Credentials (TWIC) backed by background checks, and Area Maritime Security Committees coordinate planning across port stakeholders.

How It Affects You

If you work in maritime industries or are pursuing a maritime career: The Jones Act's cabotage requirements — that vessels operating in U.S. domestic trade be U.S.-built, U.S.-flagged, U.S.-owned, and at least 75% U.S.-crewed — effectively reserve domestic shipping routes for American mariners, supporting roughly 650,000 jobs across the maritime sector. To work as an officer or credentialed rating on a U.S.-flag vessel, you need a Merchant Mariner Credential (MMC) from the U.S. Coast Guard, which requires documented sea service, physical examination, drug testing, and in many cases formal training through a maritime academy or approved program. Port workers with unescorted access to secure areas must additionally obtain a Transportation Worker Identification Credential (TWIC) — a biometric smart card issued after a TSA background check, currently costing $125.25 and valid for 5 years. The U.S. Merchant Marine Academy (Kings Point, NY) and six state maritime academies offer federally supported education for careers as licensed officers.

If you live near a major port: The Maritime Transportation Security Act of 2002 established the security framework that shapes daily operations at the roughly 360 commercial ports handling $5.4 trillion in cargo annually. Port facilities must maintain USCG-approved security plans and allow inspections — a framework that expanded dramatically after 9/11 and has since incorporated cybersecurity requirements. On the environmental side, MARPOL regulations (enforced by the Coast Guard for vessels in U.S. waters) set limits on air emissions, oil discharge, and garbage disposal that directly affect air quality in port communities. California goes further with its own at-berth emission regulations requiring vessels to use shore power or clean generators while docked. Vessel traffic services (VTS) — operated by the Coast Guard in major harbors like New York, Houston, and Puget Sound — coordinate ship movements to reduce collision risk and are your neighbors' first line of defense against maritime accidents.

If you're a consumer buying goods made overseas: The 2021-2022 supply chain crisis demonstrated how directly maritime commerce efficiency affects consumer prices. Ocean container shipping rates spiked from roughly $2,000 per 40-foot container in early 2020 to over $20,000 by late 2021, as pandemic-disrupted port operations and container imbalances cascaded through the system. Those shipping cost increases contributed directly to consumer goods inflation. For domestic trade, the Jones Act creates a U.S.-only shipping market for routes between U.S. ports — including Hawaii, Alaska, Puerto Rico, and Guam, which have no land alternatives to ocean shipping. Studies estimate the Jones Act adds 10-20% or more to shipping costs on these routes compared to open-market competition, which flows through to retail prices for food, fuel, and construction materials in those communities. The Federal Maritime Commission's increased enforcement of detention and demurrage charges under the Ocean Shipping Reform Act (2022) has modestly reduced some port-congestion costs.

If you're tracking national security and defense logistics: The U.S.-flag merchant fleet's shrinkage from over 1,000 oceangoing vessels in the 1950s to roughly 180 today represents a significant reduction in the sealift capacity available to the Department of Defense for military logistics without relying on foreign-flag vessels. The Maritime Security Program addresses this directly by paying approximately $5 million per vessel per year to operators of 60 commercially viable U.S.-flag ships, in exchange for their commitment to make those vessels available to DOD within days of an activation order. Beyond MSP, the Ready Reserve Force — a fleet of government-owned vessels maintained by MARAD — provides additional surge capacity but requires weeks rather than days to activate. Military logistics planners have consistently identified sealift capacity as a critical vulnerability for sustained large-scale operations, making the size and readiness of the U.S.-flag fleet a direct national security variable.

State Variations

• Federal maritime law generally preempts state regulation of vessel safety and navigation on navigable waters
• State port authorities operate many commercial ports and set local port policies (tariffs, environmental requirements)
• Some states regulate pilotage (the requirement for local pilots to navigate vessels in state waters)
• State environmental laws may impose additional requirements on vessels and port facilities (California's at-berth emission regulations)
• Jones Act cabotage restrictions are exclusively federal

Implementing Regulations

• 46 CFR Part 10 — Merchant Mariner Credential. This Part governs the issuance, renewal, and general administration of the MMC — the single federal credential that replaced the separate Merchant Mariner's Document (unlicensed mariners) and Merchant Mariner License (officers). Part 10 sets the ground rules; Parts 11–15 define the specific qualification standards by endorsement type. Key provisions:

  • § 10.109 — Classification of endorsements: the MMC carries four categories of endorsements: (1) national officer endorsements (e.g., Master, Chief Mate, Chief Engineer — defined in Part 11); (2) STCW officer endorsements (the international equivalent, required for international voyages); (3) national rating endorsements (e.g., Able Seafarer, QMED — defined in Part 12); (4) STCW rating endorsements (international equivalents); and (5) special purpose endorsements (Tankerman, Medical Doctor, etc.)
  • § 10.201 — The MMC as a combined document: since 2014, the MMC has consolidated what were previously separate documents — the Merchant Mariner's Document (for unlicensed ratings), the Merchant Mariner License (for officers), and STCW certificates — into a single booklet-format credential; the MMC carries all of a mariner's national and STCW endorsements, making it the sole credential required to serve in a commercial capacity on a U.S.-flag vessel; the front page identifies the mariner, and each endorsement page lists the specific capacity, vessel type, tonnage, and geographic limits
  • § 10.203 — TWIC requirement: an applicant who cannot obtain or hold a valid Transportation Worker Identification Credential (TWIC) — the TSA/Coast Guard biometric background-check card — is barred from receiving an original, renewed, or upgraded MMC; failure to maintain a valid TWIC is grounds for denial of any MMC application; the TWIC background check is separate from the MMC criminal record review (§ 10.211), effectively creating two parallel background screens
  • § 10.205 — Validity: an MMC is valid for 5 years from the date of issuance; renewal requires demonstrating continued sea service or refresher training; STCW endorsements may require additional revalidation every 5 years under international standards
  • § 10.209 — Application procedure: applications must be submitted to any of the Coast Guard's Regional Examination Centers (RECs), through the National Maritime Center (NMC) in Martinsburg, WV (the centralized processing hub), or through approved agents; applicants must provide: proof of citizenship or qualifying alien status, proof of sea service or training, medical certificate (for certain endorsements), drug test results (for original applications — § 10.209(a)(3)), and required fees; the NMC processes all MMC issuances centrally even when applications are submitted at RECs
  • § 10.211 — Criminal record review: the Coast Guard may conduct a criminal record review for any MMC application; disqualifying criminal history (certain felonies and drug offenses) bars MMC issuance; for convictions, the mariner may petition for waiver after a waiting period; domestic violence convictions are a separate disqualifying basis under 18 U.S.C. § 922(g)(9); the Coast Guard publishes a list of per-se disqualifying convictions and a list of convictions that trigger review but are not automatic disqualifiers
  • § 10.213 — National Driver Register check: for any original MMC or new officer endorsement, the applicant must consent to a check of the National Driver Register — the federal database of state-reported driver license suspensions, revocations, and alcohol/drug driving violations; the NDR check helps identify mariners with alcohol or drug-related driving history, relevant to fitness for safety-sensitive duties
  • § 10.219 — Fees: the Coast Guard charges fees for MMC evaluation, issuance, and each endorsement; fees are set by regulation and updated periodically; evaluations are charged per endorsement type requested; the fee schedule distinguishes between new applications, renewals, duplicates (lost/damaged MMC), and raises of grade (upgrading an existing endorsement); fees must be paid before the MMC is issued
  • § 10.221 — Citizenship: only individuals with valid U.S. citizenship may hold officer endorsements, with limited exceptions for operators of certain small passenger vessels under the Outer Continental Shelf Lands Act; unlicensed rating endorsements are also generally limited to U.S. citizens and nationals, with exceptions for certain non-citizen nationals of U.S. territories; this citizenship requirement is part of the Jones Act trade preference framework that reserves U.S. coastal commerce to U.S.-crewed, U.S.-built, U.S.-owned vessels
  • Subpart C — Medical Certification (6 sections): establishes physical fitness standards as a prerequisite for many MMC endorsements; the medical certificate must be issued by a licensed physician and certify that the mariner is physically able to perform the duties of the endorsed capacity; vision, hearing, cardiovascular, and neurological standards apply; some endorsements (watchstanding officer, unlimited) have more stringent standards than others; the medical certificate must be renewed every 2 years for most endorsements
  • Subpart D — Training Courses and Programs (12 sections): specifies that refresher training and revalidation courses must be completed at Coast Guard-approved training facilities; requires periodic review of approved training provider curriculum by the NMC; training provider approval (by the Coast Guard through the NMC or through reciprocal recognition of state maritime academy programs) is what determines whether a course "counts" for MMC endorsement purposes

  Part 10 is the administrative skeleton; the specific qualification standards (sea service hours, examination topics, training course requirements) for each endorsement type are found in the subordinate Parts (11 for officers, 12 for ratings, 13 for STCW officer endorsements, 14 for STCW ratings). The NMC's centralized processing model — adopted around 2010 — significantly reduced issuance times and created a single national standard for MMC decisions, replacing a system where RECs issued credentials with inconsistent standards.

  Recent rulemakings: 89 FR 102332 (Dec 2024) — Coast Guard updated Part 10 medical certification standards and fee schedules, and made conforming changes to align with updated STCW Manila Amendments training requirements across the credential subparts.

• 46 CFR Part 11 — Requirements for Officer Endorsements (127 sections — the USCG's complete qualification framework for licensed merchant marine officers, covering national deck and engineer endorsements, STCW officer endorsements, and harbor pilot certification). Key subparts:

  • Subpart A — General provisions (§§ 11.101–11.130): establishes the overall structure — officer endorsements are issued as separate endorsements on the MMC; each endorsement specifies the capacity (e.g., Master, Chief Mate), vessel type (steam/motor/sail), tonnage limit (e.g., "Oceans, Unlimited"), and geographic route; holders must maintain active sea service to renew; officer endorsements lapse if a mariner fails to serve in the endorsed capacity for more than 5 years without approved refresher training
  • Subpart B — Service and training requirements (§§ 11.201–11.215): specifies how qualifying sea service is counted — time must be served on vessels meeting the tonnage and route requirements for the endorsement sought; recency requirements (service within the past 3 years) apply; approved simulator time may partially substitute for sea time in certain specialized endorsements (e.g., radar observer, ECDIS); officer candidates must document service through vessels' official logs or signed sea service letters
  • Subpart C — Professional requirements for STCW officer endorsements (21 sections, §§ 11.301–11.340): covers the international STCW certificate-equivalent endorsements — Officer in Charge of a Navigational Watch (OICNW) (Management Level, STCW II/2), Master on ships ≥500 GT (STCW II/2), Chief Engineer (STCW III/2), Officer in Charge of an Engineering Watch (OICEW) (STCW III/1); STCW endorsements are required for any licensed officer serving on a vessel of 500 GT or more on international voyages; each STCW endorsement is paired with its national equivalent on the MMC; proficiency requirements align with STCW Code Table A-II/1 (deck) and A-III/1 (engineering), covering celestial and electronic navigation, cargo operations, ship stability, maneuvering and handling, engineering watch duties, and safety management
  • Subpart D — Professional requirements for national deck officer endorsements (53 sections — the largest subpart, §§ 11.401–11.480): specifies the sea service, training, and examination requirements for each national deck officer grade:
    • Master, Unlimited (§ 11.421): minimum 1,080 days deck service, including 360 days as chief or second mate; must pass comprehensive Master's examination covering chart plotting, stability, cargo, rules of the road, and emergency procedures
    • Chief Mate, Unlimited (§ 11.420): 360 days deck service as officer of the watch, plus 360 days additional deck service; must pass Chief Mate examination
    • Officer in Charge of a Navigational Watch / Third Mate (§ 11.410): minimum 360 days sea service in deck department, at least 180 days serving as officer candidate (deck watch officer); must pass examination in terrestrial and celestial navigation, meteorology, ship stability, cargo handling, and COLREGS (collision regulations); the entry-level officer license
    • Mate of Towing Vessels (§ 11.427): separate track for inland/coastal towing; sea service requirements measured in route segments and areas of operation rather than gross tonnage; covers river, harbor, nearshore coastal, and oceans routes; a major pathway for operators on the inland waterways system
    • Pilot of Steam/Motor Vessels of Not More Than 1,600 GRT and lower-tonnage grades support offshore supply vessels, passenger ferry operators, and small cargo trades
  • Subpart E — Professional requirements for national engineer officer endorsements (19 sections, §§ 11.501–11.540): mirrors Subpart D for engineering officers; key grades:
    • Chief Engineer, Unlimited (§ 11.524): minimum 1,080 days service in the engine department, including 365 days as first or second assistant engineer; must pass Chief Engineer examination covering main propulsion, auxiliary systems, electrical theory, engineering management, and casualty response
    • First Assistant Engineer (§ 11.523): 360 days engine department service as licensed engineer; examination covers propulsion plant operations, refrigeration, and STCW Management Level engineering competencies
    • Third Assistant Engineer (§ 11.520, the entry-level officer license): minimum 365 days engine department service; must complete Coast Guard-approved engineering training program or graduate from a maritime academy with Coast Guard-approved curriculum; examination covers thermodynamics, diesel/steam plant operation, engineering watch duties, and electrical theory
    • Designated Duty Engineer (DDE) (§§ 11.540): lower-tonnage limited engineer endorsement for vessels under 4,000 HP; enables operation of smaller commercial vessels (offshore supply vessels, passenger ferries, excursion boats) with less sea service than the unlimited track requires
  • Subpart G — Professional requirements for pilots (7 sections, §§ 11.701–11.720): sets standards for Coast Guard-licensed first-class pilots — required on vessels in foreign commerce in U.S. waters where state pilotage is not compulsory; applicants must have 3 years service as a licensed officer, complete 12 round trips over the specific pilotage waters under supervision, and pass an examination on local routes, hazards, currents, and emergency procedures; the first-class pilot license supplements (and is separate from) the state pilot license required by individual port states
  • Subpart J — Recognition of other parties' STCW certificates (5 sections, §§ 11.901–11.930): implements the STCW Convention's mutual recognition system; foreign STCW certificates issued by party states on the USCG's White List (countries found to have implemented STCW equivalently) are recognized for service on U.S.-flag vessels under a recognition endorsement on the MMC; the USCG's White List is published on the NMC website and updated as the Coast Guard evaluates each flag state's STCW implementation; mariners from non-White List countries must obtain U.S. officer endorsements through the standard examination route

  Part 11 sits at the center of U.S. maritime workforce policy: it determines who qualifies to command or serve as a licensed officer on the $1.5 trillion in freight moved annually on U.S.-flag oceangoing vessels, and on the tens of thousands of smaller commercial vessels in domestic trades. The deck officer track (Third Mate → Chief Mate → Master) and the engineer officer track (Third Assistant Engineer → Chief Engineer) are the principal career ladders for maritime academy graduates and hawsepipers (mariners who advance from unlicensed ratings). The STCW equivalents embedded in Part 11 mean that a U.S.-credentialed Master holds an internationally recognized qualification — enabling U.S. mariners to serve on foreign-flag vessels and supporting a globally portable credential structure.

  Recent rulemakings: 80 FR 61839 (Oct 2015) — The USCG's comprehensive STCW Manila Amendments implementation rule revised professional requirements throughout Part 11 to align with the 2010 Manila Amendments to the STCW Convention, adding new sections on ECDIS training, advanced firefighting, medical care, and security training for senior officers.

• 46 CFR Part 12 — Requirements for Rating Endorsements (the USCG's complete certification framework for unlicensed merchant mariners — the crew members who work under officer supervision in deck, engine, and steward departments). All endorsements are carried on the Merchant Mariner Credential (MMC), a single document replacing the separate MMD (Merchant Mariner Document) and license cards. Key categories:

  • § 12.201 — General requirements for national and STCW rating endorsements: applicants must hold a valid MMC, satisfy sea service and training requirements specific to the rating, pass any required exam, and demonstrate physical fitness; STCW endorsements require national endorsements as a prerequisite (one cannot hold an international certification without first meeting domestic standards)
  • §§ 12.401–12.405 — Able Seafarer-Deck (the core deck crew rating): a seafarer "below officer and above Ordinary Seafarer" who can steer, stand navigational watches, handle mooring lines and cargo gear, operate survival craft, and perform deck maintenance; minimum requirements: (1) minimum age 18; (2) minimum 12 months sea service on deck (or approved equivalent training); (3) pass a Coast Guard examination; (4) hold a valid STCW Basic Training certificate — the Able Seafarer-Deck is the benchmark unlicensed deck crew credential on vessels in ocean and coastwise service
  • § 12.407 — Lifeboat Operator endorsement: required to serve as the person in charge of a lifeboat on vessels where the Certificate of Inspection assigns this function; minimum requirements include approved lifeboat training and proficiency in survival craft; lifeboat operators are responsible for mustering survivors and safely operating the craft during abandonment; vessels required by regulation to carry lifeboats (most commercial ships) must have credentialed Lifeboat Operators in the crew complement
  • § 12.501 — Qualified Member of the Engine Department (QMED): the unlicensed engineering rating covering oilers, boiler technicians/watertenders, junior engineers, pump technicians, refrigerating engineers, and deck engineers; QMEDs maintain propulsion machinery, auxiliary systems, and bilge/ballast systems under licensed engineer supervision; minimum requirements: sea service in the engine department (varies by QMED specialty), plus written and practical examinations for most ratings
  • §§ 12.601–12.603 — STCW rating endorsements — Able Seafarer-Deck (international standards): holders of national Able Seafarer credentials who seek the STCW version (required on vessels ≥500 GT on international voyages) must additionally: (1) be at least 18; (2) have at least 12 months of approved sea service in the deck department; (3) have completed STCW Basic Training (§ 12.602 — personal survival, fire prevention, elementary first aid, and personal safety/social responsibilities); (4) demonstrate competence per STCW A-II/5; the STCW endorsement appears on the MMC alongside the national endorsement
  • § 12.602 — Basic Training requirement (applies to virtually all STCW rating endorsements): all mariners on STCW vessels must complete the four STCW Chapter VI Basic Training courses — Personal Survival Techniques (swimming, donning lifejackets and immersion suits, using survival craft); Fire Prevention and Firefighting; Elementary First Aid; Personal Safety and Social Responsibilities (shipboard organization, safety culture, emergency duties); Basic Training certificates from STCW-party countries are mutually recognized; U.S. Coast Guard-approved courses are offered at maritime academies, training schools, and some community colleges
  • §§ 12.701–12.711 — Entry-level and apprentice ratings: most entry-level ratings (Ordinary Seafarer, Wiper, Steward's Department) are issued without professional examination to applicants who meet age and basic background requirements; apprentice programs (Apprentice Mate § 12.711, Apprentice Engineer § 12.709) allow enrollment in Coast Guard-approved training programs with provisional credential rights during training
  • §§ 12.901–12.905 — Passenger ship ratings (STCW V/2): any seafarer performing duties involving safety or care of passengers on an international passenger vessel must hold specific endorsements demonstrating crowd management, passenger safety, and crisis management training — an additional requirement layered on top of standard deck/engine/steward ratings, particularly significant for cruise ship crew

  Part 12 governs the largest population of U.S. merchant mariners — the unlicensed rating workforce that constitutes the majority of crew on cargo ships, tankers, bulk carriers, and large passenger vessels. Ratings work under officer supervision but hold significant safety responsibilities: an Able Seafarer-Deck may stand an independent navigational watch during coastal transits, handle mooring at major commercial ports, and serve as the person in charge of a survival craft with survivors aboard. The distinction between national and STCW endorsements matters for vessel operations: vessels on domestic routes need only national credentials; vessels on international voyages of 500 GT or more must have STCW-endorsed crew, effectively requiring all commercial-scale international maritime workers to meet international training standards.

• 46 CFR Part 15 — Manning Requirements (62 sections — the Coast Guard's minimum crew standards for U.S.-flag vessels, implementing the statutory manning requirements in 46 U.S.C. Chapter 81; specifies the type and number of credentialed officers and ratings required for each class of vessel, work-hour limits, and international STCW compliance for seagoing vessels):

  • § 15.501 — Certificate of Inspection (COI): every inspected U.S.-flag vessel must carry a Certificate of Inspection issued by the Coast Guard that specifies the minimum required crew complement — the exact number of masters, mates, engineers, licensed operators, and unlicensed crew the vessel must carry to operate lawfully; the COI is vessel-specific and reflects vessel size, route, passenger capacity, and type of operation; the vessel may not depart with fewer crew than the COI specifies (§ 15.515)
  • § 15.530 — Large passenger vessels: cruise ships and other vessels carrying more than 500 passengers (or exceeding 70,000 GT) must ensure that senior officers hold U.S. MMC endorsements; limits on the use of foreign-credentialed officers in certain positions; ships operating U.S. domestic routes (Jones Act trade) must comply with 75% U.S.-citizen crew requirements
  • § 15.605 / § 15.610 — Uninspected vessel operators: every uninspected passenger vessel (charter fishing boats, water taxis, whale-watching boats) must be under the control of a Coast Guard-credentialed operator; towing vessels must be operated by a credentialed Master or Mate (Pilot) with a towing endorsement — requirements significantly expanded after the 2001 Staten Island Ferry and other incidents involving unlicensed operators
  • § 15.705 / § 15.710 — Watches and working hours: vessels operating beyond the Boundary Line (offshore) must maintain navigational and engineering watches per STCW requirements; officers serving as Officer in Charge of a Watch may not work more than 14 hours in any 24-hour period or more than 72 hours in any 7-day period; minimum rest periods of 10 hours in any 24-hour period (may be divided into no more than two periods, one of which must be at least 6 hours); these STCW-aligned standards are the U.S. implementation of international seafarer fatigue prevention requirements
  • §§ 15.1101–15.1113 — STCW compliance for seagoing vessels: vessels of 500 GT or more operating internationally must comply with the Standards of Training, Certification and Watchkeeping (STCW) Convention; watchstanding officers must hold STCW endorsements on their MMC; all persons assigned shipboard duties must complete familiarization and basic safety training (§ 15.1105) before performing those duties; vessel security officers and ship security personnel must hold STCW security certification; medical first aid training is required for designated crew members
  • § 15.720 — Sailing short: when a vessel is short a required crew member and cannot find a replacement, the Master may request a waiver from the Officer in Charge, Marine Inspection (OCMI) to sail short for a specified period; waivers are not automatic — the OCMI evaluates whether the reduced complement poses an unacceptable safety risk
  • §§ 15.1001–15.1050 — Pilotage (state pilot districts): vessels engaged in foreign commerce must use a Coast Guard-licensed first-class pilot in designated U.S. waters; state pilot districts in California, Hawaii, New York/New Jersey, Massachusetts, and North Carolina prescribe specific waters requiring registered state pilots, who operate under state licensing authority separate from the Coast Guard MMC system; state pilotage requirements (which ports require a pilot, pilot fee schedules) are set by state law, not federal regulation

  The manning rules create the framework for safe minimum crew — but actual crew complements on modern vessels typically exceed the regulatory minimum, especially on cargo ships with demanding cargo-handling or maintenance cycles. Crew size has declined dramatically with automation: a modern container ship may carry a crew of 20–22 where a similar 1970s vessel carried 35–40. The Coast Guard reviews and updates minimum safe manning determinations as vessel automation technology advances. Port State Control — foreign flag State authorities and the U.S. Coast Guard — inspects vessels calling at U.S. ports to verify compliance with STCW and manning requirements; vessels found non-compliant may be detained until deficiencies are corrected.

• 46 CFR Part 35 — Operations of tank vessels (watchstanding, emergency procedures, safety equipment for merchant vessels)

• 46 CFR Part 131 — Operations of offshore supply vessels (OSVs) — safety drills, equipment maintenance, casualty reporting; see vessel-inspection-safety.md for full coverage

• 46 CFR Part 307 — Mandatory Position Reporting System for Vessels (AMVER): requires operators of U.S.-flag oceangoing vessels of 1,000+ gross tons in foreign commerce to file regular position reports through the Automated Mutual Assistance Vessel Rescue (AMVER) system — a Coast Guard-operated maritime safety tool:

  • § 307.5 — Who must report: operators of U.S.-flag vessels of 1,000 gross tons or more operating in the foreign commerce of the United States; foreign-flag vessels may be required to report under special circumstances by MARAD advisory notice; the 1,000 gross ton threshold covers the major commercial cargo vessels, tankers, and container ships that benefit most from AMVER's search-and-rescue coordination
  • § 307.7 / § 307.9 — Required reports and timing: four types of reports are required: (1) Departure Report — sent as soon as practicable after sailing; (2) Position Report — sent at least once every 24 hours during the voyage; (3) Deviation Report — sent when a vessel changes its intended route; (4) Arrival Report — sent upon arriving at destination; reports must include vessel identification, position (latitude/longitude), course, speed, destination, and estimated time of arrival; sailing plans (filed before departure) are optional but encouraged
  • § 307.15 — Permitted uses of AMVER data: position information is released to recognized search-and-rescue authorities — when a vessel issues a distress call or a Search and Rescue (SAR) mission is underway, AMVER data allows the U.S. Coast Guard and international SAR coordinators to identify all vessels in the distress area that might be diverted to assist; AMVER data may also be used for port arrival notification required by 33 CFR Part 160; the data is not used for commercial purposes
  • § 307.19 — Penalties: operators who fail to file required AMVER reports are subject to a penalty of $166 per day of non-compliance; the penalty constitutes a lien against the vessel

  AMVER is one of the oldest and most successful international maritime safety cooperation programs. The Coast Guard operates AMVER as a cooperative system — vessels that participate receive AMVER performance certificates and benefit from the system when they are in distress or need assistance. Before AMVER (established 1958), finding vessels to divert to a maritime emergency was a manual, time-consuming process of contacting individual ships by radio. The AMVER database now contains position data on approximately 15,000 vessels at any given time, covering the major ocean shipping lanes. When a distress call is received, AMVER can identify within minutes which vessels are within range to assist — a life-saving capability that has been used in thousands of rescues.

• 46 CFR Part 381 — Cargo Preference — U.S.-Flag Vessels: the MARAD regulations implementing the Cargo Preference Act of 1954 (section 901(b) of the Merchant Marine Act, 1936), which requires that a percentage of U.S. government-financed cargo move on American-flag commercial vessels when such service is available at fair and reasonable rates. Key provisions:

  • § 381.2 — Covered cargo: the preference requirement applies to equipment, materials, and commodities (1) procured for U.S. government account; (2) furnished to a foreign country under any U.S.-financed aid program (USAID, P.L. 480 food aid, Economic Support Fund); or (3) procured with funds from U.S. government grants, loans, guarantees, or advance payments to any party — creating a broad sweep that covers not just direct government purchases but government-assisted commercial activity
  • § 381.5 — Fix U.S.-flag first: agencies must commit cargo to U.S.-flag vessels before booking any foreign-flag vessels; U.S.-flag vessels must be offered preference cargoes first, and only after U.S.-flag capacity is exhausted (or unavailable at fair and reasonable rates) may agencies use foreign carriers; the "fix first" rule has operational significance — agencies cannot simultaneously solicit both U.S. and foreign bids and choose the cheapest; U.S.-flag must get the first opportunity
  • § 381.4 — Liner parcel cargo split: for liner parcel cargoes (mixed goods shipped in less-than-shipload lots), agencies must divide the cargo mix so that U.S.-flag vessels receive their fair share; the preference percentage for general government cargo is 50%; for P.L. 480 food aid, the Food Security Act of 1985 increased the preference to 75% of gross tonnage
  • § 381.3 — Reporting: each agency must submit a cargo preference report to MARAD's Office of National Cargo and Compliance within 20 working days of loading, specifying the commodity, quantity, port, U.S.-flag vessel used, and charter rates; MARAD uses this data to monitor compliance and identify agencies that are systematically using foreign-flag vessels in violation of the Act
  • § 381.7 — Grant and loan clauses: agencies that provide federal grants, guarantees, or loan advances to non-governmental recipients must include cargo preference clauses in the agreements; this provision extends the preference requirement beyond direct government shipments to private entities receiving federal financial assistance — including development finance projects, USAID grantees, and commodity credit programs

  The Cargo Preference Act is the U.S. government's primary mechanism for sustaining the U.S.-flag merchant fleet through mandatory demand. Without cargo preference, most government-sponsored shipments would move on lower-cost foreign-flag vessels, reducing demand for the U.S.-flag fleet below the level needed to maintain the national security sealift capacity the Maritime Security Program is designed to preserve. Critics argue cargo preference imposes significant costs on food aid programs and government procurement; supporters counter that the fleet's strategic value to national security (as naval auxiliary sealift) justifies the premium. MARAD publishes annual reports on cargo preference compliance. Recent rulemakings: the core framework dates to the original 1954 Act implementing regulations; the Food Security Act 1985 increase to 75% for P.L. 480 food aid was the most significant change.

• 46 CFR Part 393 — America's Marine Highway Program (AMHP): MARAD regulations implementing 46 U.S.C. § 55601, which directed DOT to develop a national marine highway transportation system as an extension of the surface transportation network — using inland rivers, the Great Lakes, and coastal waterways to move freight that would otherwise travel on congested highways. Key provisions:

  • § 393.2 — Marine Highway Route designations: MARAD may recommend routes that relieve landside congestion along coastal corridors or promote short sea transportation (waterborne cargo movement between U.S. ports); Route Sponsors (states, port authorities, regional agencies, or private operators) submit designation requests to MARAD's AMHP Program Office at any time; MARAD publishes all designated routes on its website; designation is the Secretary of Transportation's decision on MARAD's recommendation
  • § 393.3 — Marine Highway Project designations: a Project is a specific service on a designated Route; to qualify, Projects must (1) use U.S.-documented vessels (Jones Act compliant); (2) involve carriage of cargo in short sea transportation (not passenger service); (3) involve new or expanded services — not existing operations that don't need support; (4) be located on a designated Marine Highway Route; MARAD announces open seasons for Project designation applications via Federal Register Notice and its AMHP website
  • § 393.4 — DOT coordination: the Program Office works with federal, state, local, and tribal governments to incorporate marine highway transportation into Statewide Transportation Improvement Programs and State Freight Plans — the formal planning documents that govern infrastructure investment; this coordination is how marine highway alternatives get considered alongside highway and rail options in regional freight planning
  • § 393.5 — Research: DOT may conduct research on short sea transportation in consultation with EPA; research priorities include identifying cargo markets and service parameters that could support new services, emerging vessel designs that would reduce emissions and lower costs, and impediments (Jones Act compliance, port infrastructure gaps, intermodal transfer costs) that prevent marine highway development
  • § 393.6 — AMHP grants: MARAD administers competitive grants for designated Marine Highway Projects; grant opportunities are announced via Notice of Funding Opportunity (NOFO) in the Federal Register and grants.gov; MARAD makes award recommendations to the Secretary, who has final authority; the Associate Administrator for Intermodal Systems Development manages the program

  America's Marine Highway Program is the federal policy response to the reality that U.S. waterways — particularly the Mississippi River system, the Great Lakes-St. Lawrence Seaway, the Atlantic Intracoastal Waterway, and coastal corridors — are dramatically underutilized as freight arteries compared to Europe, where short sea shipping accounts for 40% of freight tonne-km. One Jones Act-compliant barge on the Mississippi can carry the equivalent of 70 semi-trucks. The program's progress has been modest: relatively few routes have been designated and grant funding has been limited, but the infrastructure for a marine highway expansion exists in the waterway system. Projects that have received AMHP support include container-on-barge services competing with I-95 corridor trucking in the Northeast and Gulf Coast inter-port feeders offloading container ships for regional distribution.

• 46 CFR Part 310 — Merchant Marine Training: MARAD's implementing regulations for the federal maritime academy system — the United States Merchant Marine Academy (USMMA) at Kings Point, New York, and the six state maritime academies that receive federal financial assistance under the Maritime Education and Training Act of 1980. Part 310 governs the conditions under which MARAD provides subsidies, training ships, and program standards to both the federal academy and the state schools:

  Subpart A — State Maritime Academies (§§ 310.1–310.12)

  • § 310.2 — Federal assistance authority: MARAD may enter into agreements with up to one school per state to provide annual maintenance and support payments, federal student subsistence and incentive payments, and the use of federal training ships; this per-state limit prevents the system from expanding beyond the six current federally aided state maritime academies (California State University Maritime Academy, Maine Maritime Academy, Massachusetts Maritime Academy, SUNY Maritime College, Texas A&M Maritime Academy, and Great Lakes Maritime Academy at Northwestern Michigan College); agreements require the school to maintain MARAD-approved academic programs
  • § 310.3 — Schools and courses: each federally aided state maritime school must maintain accredited programs in maritime transportation, marine engineering, or both; the curriculum must train students for officer-level licensing (deck officer or engineering officer) through a combination of classroom instruction, shipboard training, and practical seamanship; state maritime academies operate primarily as bachelor's degree-granting institutions
  • § 310.4 — Training ships: MARAD may furnish a training ship to any state maritime school when one is available; MARAD retains title to and legal responsibility for federally furnished training ships; the state school is responsible for operation, maintenance, and crewing; the annual sea training voyages — typically summer cruises lasting 60–90 days — are the core practical training experience for cadets working toward their officer endorsements
  • § 310.5 — Personnel: state maritime academies select and appoint their Superintendents and faculty under state authority; MARAD approval is not required for individual faculty hiring, but academic programs must maintain USCG-approved course content for sea service credit and officer license preparation
  • § 310.10 — Discipline and dismissal: each school must establish published rules governing cadet discipline, including a demerit system; when federal support is involved, disciplinary rules must be approved by MARAD to ensure consistent standards across the state academy system

  Subpart B — United States Merchant Marine Academy (§§ 310.50–310.12-1)

  • § 310.50 — Purpose: the USMMA at Kings Point, New York is the federal maritime academy, operated directly by MARAD; its mission is to train midshipmen as merchant marine officers and as a reserve of trained officers available for national defense; Kings Point is one of the five federal service academies (alongside West Point, Annapolis, the Air Force Academy, and the Coast Guard Academy)
  • § 310.52 — Structure: the Academy is a four-year bachelor's degree program; midshipmen are appointed, not recruited — nominations come from Members of Congress, the Vice President, and presidential appointments (similar to the military academies); approximately 900 midshipmen are enrolled; graduates receive both a Bachelor of Science degree and a U.S. Coast Guard officer license (Third Mate or Third Assistant Engineer); graduates incur a service obligation — 5 years of service as a licensed merchant marine officer or in a U.S. government position, or 8 years in the National Guard or reserves
  • § 310.51 — Definitions and appointment authority: midshipmen are appointed to serve as officers of the merchant marine of the United States; the Academy operates under the authority of the Maritime Education and Training Act of 1980 (Pub. L. 96-453); the Secretary of Transportation has overall authority over the Academy through MARAD

  The federal maritime academy system — Kings Point plus the six state academies — produces approximately 1,000–1,200 new licensed merchant marine officers annually, a substantial share of the pipeline for U.S.-flag vessel officers. The USMMA's dual military/civilian mission is reflected in the service obligation: graduates who enter the military reserve officer programs (the Sea Year training structure means many Kings Point graduates have Navy Reserve commissions) provide the trained maritime officer reserve capacity that the National Security Council and Navy identify as critical to sustained sealift capacity in a major conflict. The state academies, while civilian in character, provide the majority of U.S.-flag deck and engineering officers for commercial vessel operations. Recent rulemakings: Part 310 has not been significantly amended since the early 2000s; MARAD administers the training ship program and academy oversight primarily through cooperative agreements rather than rulemaking.

• 46 CFR Part 327 — Seamen's Claims: Administrative Action and Litigation (MARAD's implementing regulations for the administrative claims process through which seamen and mariners employed on government-operated vessels may file claims for personal injuries, property losses, and related maritime injuries arising in the course of service; the rule implements the Suits in Admiralty Act and Admiralty Extension Act (50 U.S.C. App. § 1291) and applies to vessels in the National Defense Reserve Fleet, MARAD-operated training ships, and other government-owned vessels):

  • § 327.3 — Covered claims: Part 327 governs claims for personal injury or death arising from service on or aboard a government vessel, property loss or damage sustained in connection with government vessel operations, and admiralty claims under the Admiralty Extension Act arising from damage or injury caused on land by a government vessel; claims under the Federal Tort Claims Act are handled through a different channel — this Part covers maritime-specific claims under the Suits in Admiralty Act, which provides the statutory right of action for seamen injured on government vessels in lieu of direct suit in admiralty
  • § 327.20 — Admiralty Extension Act claims: personal injury or property damage claims under the Admiralty Extension Act (AEA) must be presented to MARAD as an administrative claim before filing suit; the AEA extends admiralty jurisdiction to land-based injuries caused by government vessels (e.g., a government vessel crane that swings over a pier and drops cargo on a longshoreman); MARAD has 6 months from receipt of a complete claim to take final action; if the claim is denied or MARAD fails to act within 6 months, the claimant may file suit in federal district court
  • § 327.21 — Definitions: "accrual date" is when the alleged wrongful act or omission results in injury; the limitations period for maritime personal injury claims under the Suits in Admiralty Act is 2 years from the date the cause of action accrued; presenting a claim to MARAD tolls the statute of limitations during the 6-month administrative review period
  • § 327.22 — Who may present claims: personal injury claims may be filed by the injured seaman or their authorized representative; death claims may be filed by surviving spouses, children, or other dependents; property claims may be filed by the owner of the property or their insurer/subrogee; multiple claimants arising from a single maritime incident must each file separately
  • § 327.25 — Claim content requirements: a complete claim must include: a description of the incident, the date and location, the nature of the injury or damage, the medical treatment received and expenses incurred, identification of witnesses, and a demand for a specific dollar amount; incomplete claims do not start the 6-month administrative review period; medical records, employment records, and other supporting documentation should accompany the claim or be provided promptly upon MARAD's request

  The Part 327 administrative claims process reflects the special position of seamen in U.S. maritime law. The Merchant Marine Act of 1936 and related legislation sought to support U.S.-flag shipping by ensuring that seamen on government-operated vessels had clear rights to compensation for work-related injuries — parallel to (but distinct from) the Jones Act rights of seamen on commercial vessels. MARAD-operated vessels in the National Defense Reserve Fleet (the "moth-ball fleet" of inactive government vessels maintained for sealift capacity) and MARAD's training ships assigned to the state maritime academies are among the primary vessels where Part 327 claims arise. For retired maritime academy cadets and merchant mariners with injuries sustained during MARAD-operated vessel operations, Part 327 is the gateway to federal compensation without requiring the Suits in Admiralty Act lawsuit that would otherwise be the primary remedy.

Pending Legislation

• HR 6410 — Atlantic Coast Shipping Safety Act: would establish mandatory safety corridors for vessel traffic along the Atlantic coast. Status: Introduced.
• HR 7350 — Fishing Vessel Financing Improvement Act: would improve access to federal financing programs for commercial fishing vessel construction and modernization. Status: Introduced.
• HR 4839 — Merchant Marine Allies Partnership Act: would allow allied-nation vessels to participate in certain U.S. coastwise trade under specified conditions. Status: Introduced.
• HR 4952 — Ensuring Coast Guard Readiness Act: would authorize construction and repair of Coast Guard vessels at NATO and allied-nation shipyards. Status: Introduced.
• HRES 812 — Condemns a proposed global shipping carbon levy, expressing Congressional opposition to international carbon taxes on maritime commerce. Status: Introduced.

Recent Developments

• The Maritime Security Program was reauthorized and expanded from 60 to potentially more vessels, with increased stipend levels
• Cybersecurity threats to maritime infrastructure and vessels have driven new Coast Guard guidance and regulatory proposals
• Supply chain disruptions (2021-2023) highlighted the importance of port capacity and efficiency
• The Federal Maritime Commission has increased enforcement of shipping practices and container detention/demurrage charges under the Ocean Shipping Reform Act (2022)
• Decarbonization of the maritime sector is a growing focus, with requirements for alternative fuels and emission reductions
• Trump EO 14269 "Restoring American Seafood Competitiveness" (2025) directed MARAD and the FMC to reduce regulatory burdens on U.S.-flagged vessels and expand Jones Act waiver authority during energy supply disruptions; the administration signaled interest in broader Jones Act reform while stopping short of legislative repeal.
• Chinese shipbuilding fees and USTR Section 301 action (2025): the USTR proposed levying port fees of up to $1.5 million per call on Chinese-built vessels entering U.S. ports, targeting China's dominance in global shipbuilding; the proposal threatened to raise container shipping costs for U.S. importers and sparked pushback from agriculture exporters dependent on affordable bulk carriers.
• DOGE MARAD workforce review: the Maritime Administration faced early retirement offers in early 2025; staffing reductions at MARAD raised concerns about oversight of the U.S. Maritime Security Program, which subsidizes 60 U.S.-flag vessels maintained for national defense sealift readiness.