Nav aids

Three autonomous buoy stations established in East Siberian Sea at 74-53.21N 175-33.07E, 74-35.06N 173-31.44E, and 73-16.56N 173-52.60E; one mile berth requested.

Arctic Ocean · HYDROARC 254/23

What this record establishes

Cancelled notice · 2026-08-14 18:10Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA XXI 56/23 130705Z OCT 23.. Issued 2023-10-13 07:22Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-17 15:50Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Arctic Ocean. The parsed report position is 74.249, 174.317. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Arctic Ocean →

issued
2023-10-13 07:22Z
status
Cancelled notice
authority
NAVAREA XXI 56/23 130705Z OCT 23.
NAVAREA
NAVAREA XXI · named as the source of this relay
sea
Arctic Ocean
position
74.249, 174.317
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:41Z

Original warning text

EAST SIBERIAN SEA.
DNC 27.
1. AUTONOMOUS BUOY STATIONS ESTABLISHED IN:
   A. 74-53.21N 175-33.07E.
   B. 74-35.06N 173-31.44E.
   C. 73-16.56N 173-52.60E.
   ONE MILE BERTH REQUESTED.
2. CANCEL HYDROARC 283/22.

Reading this warning

DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Wide berth requested
Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROARC
The U.S. long-range warning series for the Arctic Ocean.

All warning terms →

Collected reports in this area · aids-to-navigation notices

3 within 180 nm since 2022 · 0 in the last 12 months · 0 listed in force now

22
23

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

137 aids-to-navigation notices listed in force · see all

Record snapshot 2026-10-01 17:34Z; source collection times vary.

Nav aids

Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.