The Navy's permit for an under-ice robot navigation grid
NMFS has authorized the Office of Naval Research to harass marine mammals incidental to Year 9 of its Arctic Research Activities in the Beaufort and Chukchi seas, and what the authorization covers is an acoustic navigation grid. Up to six moored sources at 900 to 950 Hz and two drifting ice gateway buoys will transmit a 30 second pulse every four hours for one year, so that gliders operating under sea ice can fix a position by trilateration from those sources rather than by dead reckoning. The study area is about 639,237 square kilometres across the US Exclusive Economic Zone, the high seas north of Alaska and part of the Canadian Exclusive Economic Zone, coming within 204 kilometres of the Alaska coast at its nearest point. A research cruise of 22 days is planned to begin September 22nd, 2026 aboard R/V Sikuliaq, US Coast Guard Cutter HEALY or another vessel, while the sound sources stay in the water for twelve months. The authorization covers Level B harassment only and states that take by Level A harassment is neither anticipated nor authorized.
How the public reaches this
The record on this one is shut. NMFS took comment for 30 days after publishing the proposed authorization on July 22nd, 2026 and received three comment letters, all from private citizens, then issued the authorization on September 10th, 2026. There is no open filing path now. The next door is the Year 10 renewal, which the Year 9 proposal already invited comment on inside its own action line, and no renewal notice has published. Anyone who wants standing in Year 10 should watch the Federal Register for a proposed authorization under docket RTID 0648-XF889 or its successor.
Timeline
Sources
Every document a fact on this page was checked against.
Federal Register via GPO govinfo, NOAA National Marine Fisheries Service
Federal Register plain text, NOAA National Marine Fisheries Service
Federal Register plain text, NOAA National Marine Fisheries Service
Federal Register via GPO govinfo, NOAA National Marine Fisheries Service
How this decision moved
One dated line per material change, oldest first.
2026-09-12 Added from today's verified claims. NMFS issued the Office of Naval Research an incidental harassment authorization for Year 9 of its Arctic Research Activities, published September 10th, 2026 at 91 FR 57547, effective September 14th, 2026 through September 13th, 2027. Signed September 4th by Kimberly Damon-Randall, Director of the NMFS Office of Protected Resources, filed September 9th. The authorization covers Level B harassment of beluga whale and Arctic ringed seal, and states that take by Level A harassment is neither anticipated nor authorized. Two figures in the record are worth tracking as this series continues. The stock table gives the Beaufort Sea beluga abundance as 39,258 from a 1992 survey, and gives the Arctic ringed seal stock abundance as undetermined, with its potential biological removal also undetermined, for the one species here listed as threatened under the Endangered Species Act. The finding relies on a Biological Opinion the NMFS Alaska Regional Office issued on September 13th, 2022. No authorized take figure is recorded here, because the take table could not be read from the Federal Register text or XML on any route tried and an abundance estimate is not a take.
2026-09-12 Location dropped the same day it was added, and the record says so rather than quietly losing a field. The item shipped with an exact point, 72.0 north and 150.0 west, standing in for a study area of about 639,237 square kilometres across the Beaufort and eastern Chukchi seas, the high seas and part of Canada's exclusive economic zone. No claim in the run's verified set establishes those coordinates, and the site publishes a location as schema.org GeoCoordinates and as a pin on the docket map, so a representative point was being published as a measured fact. The area itself is in this item's summary and in the deck, where it belongs. The validator's own remedy text is the one taken here, that an item keeps its page and its row without claiming a spot on the map.
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Cite this
Alaska AI Docket, The Navy's permit for an under-ice robot navigation grid.
Tracked since September 12, 2026, last verified
September 12, 2026. https://alaskaaihq.com/docket/onr-arctic-iha-year-9/ · Reuse permitted under
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JSON, item id onr-arctic-iha-year-9.
Questions about this decision
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What is The Navy's permit for an under-ice robot navigation grid?
NMFS has authorized the Office of Naval Research to harass marine mammals incidental to Year 9 of its Arctic Research Activities in the Beaufort and Chukchi seas, and what the authorization...
Who decides The Navy's permit for an under-ice robot navigation grid?
NOAA National Marine Fisheries Service, Office of Protected Resources
Can I comment on The Navy's permit for an under-ice robot navigation grid?
The record on this one is shut. NMFS took comment for 30 days after publishing the proposed authorization on July 22nd, 2026 and received three comment letters, all from private citizens, then issued the authorization on September 10th, 2026. There is no open...
When is the deadline for The Navy's permit for an under-ice robot navigation grid?
September 14th, 2 days out. Authorization takes effect
Has The Navy's permit for an under-ice robot navigation grid been decided?
It is decided. Location dropped the same day it was added, and the record says so rather than quietly losing a field. The item shipped with an exact point, 72.0 north and 150.0 west...
What happens next with The Navy's permit for an under-ice robot navigation grid?
Authorization takes effect, September 14th, 2 days out.
What changed on The Navy's permit for an under-ice robot navigation grid?
Location dropped the same day it was added, and the record says so rather than quietly losing a field. The item shipped with an exact point, 72.0 north and 150.0 west...
What kind of decision is The Navy's permit for an under-ice robot navigation grid?
A regulatory docket, decided by NOAA National Marine Fisheries Service, Office of Protected Resources.
When did The Navy's permit for an under-ice robot navigation grid start?
Tracked since September 12th, today. The earliest date on its record is July 22nd.
Where can I read the sources for The Navy's permit for an under-ice robot navigation grid?
Federal Register via GPO govinfo, NOAA National Marine Fisheries Service, Federal Register plain text, NOAA National Marine Fisheries Service. Every one is listed with its date on the decision page.
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