No Swimming: Marines Shooting in Hawaii's Kaneohe Bay
Published Date: 8/11/2026
Rule
Summary
The United States Army Corps of Engineers (Corps) is amending its regulations for an existing danger zone at the U.S. Marine Corps Ulupau Crater Weapons Training Range in the vicinity of Kaneohe Bay, Hawaii. The Marine Corps requested a change to the current hours that weapons firing may be conducted. This amendment is necessary in order to ensure public safety.
Analyzed Economic Effects
4 provisions identified: 3 benefits, 0 costs, 1 mixed.
New Weapons Firing Hours Set
Weapons firing at the Ulupau Crater Weapons Training Range may occur any time between 6:00 a.m. and 2:00 a.m., Monday through Sunday. This change takes effect on September 10, 2026, and updates the danger zone hours in Kaneohe Bay, Island of Oahu, Hawaii.
Corps Finds No Major Small Business Costs
The Corps determined that amending the existing danger zone hours will not have a significant economic impact on a substantial number of small entities, and small governments will not be significantly and uniquely affected. This finding is part of the Regulatory Flexibility Act review for the rule.
Visible Warning Beacons Provided
The rule confirms the red light beacons/flagpoles are located at 21.458833, -157.724557 (north-facing) and 21.450469, -157.727293 (east-facing) and that those beacons are visible throughout the danger zone. The beacons are stated to conform to safety standards for the Ulupau Crater danger zone.
No Limits on Firing Frequency or Duration
The rule states that the frequency and duration of firing events are not specified because compliance with the Marine Corps Base Hawaii training mission requires flexibility. The Corps did not set numeric limits on how often or how long firing events may occur.
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