Data / Federal rules / 2026-04668
Takes of Marine Mammals Incidental to Specified Activities; Taking Marine Mammals Incidental to U.S. Navy Operations of Surveillance Towed Array Sensor System Low Frequency Active Sonar in the Western and Central North Pacific Ocean and Eastern Indian Ocean
The National Oceanic and Atmospheric Administration published this proposed rule in the Federal Register on March 10, 2026. Comments closed on April 9, 2026.
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What the agency says
NMFS has received a request from the U.S. Department of the Navy (Navy) for Incidental Take Regulations (ITR) and an associated Letter of Authorization (LOA) pursuant to the Marine Mammal Protection Act (MMPA). The requested regulations would govern the authorization of take of marine mammals incidental to training and testing activities using Surveillance Towed Array Sensor System (SURTASS) Low Frequency Active (LFA) sonar systems in the western and central North Pacific and eastern Indian oceans over the course of 7 years from August 2026 through August 2033. NMFS requests comments on this proposed rule. NMFS will consider public comments prior to making any final decision on the promulgation of the requested ITR and issuance of the LOA; agency responses to public comments will be summarized in the final rule, if issued. The Navy's activities are considered military readiness activities pursuant to the MMPA, as amended by the National Defense Authorization Act for Fiscal Year 2004 (2004 NDAA) and the NDAA for Fiscal Year 2019 (2019 NDAA).
Key facts
- Document number
- 2026-04668
- Type
- Proposed rule
- Action
- Proposed rule; proposed letter of authorization; request for comments
- Agency
- Commerce Department; National Oceanic and Atmospheric Administration
- Published
- March 10, 2026
- Comments due
- April 9, 2026
- Dates
- Comments and information must be received no later than April 9, 2026.
- Docket
- Docket No. 260304-0065
- Regulation ID (RIN)
- 0648-BN61
- Code of Federal Regulations
- 50 CFR 218
- Topics
- Administrative practice and procedure; Endangered and threatened species; Fish; Fisheries; Marine mammals; Penalties; Reporting and recordkeeping requirements; Transportation; Wildlife
- Pages
- 130
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