North Pacific Ocean

IHO sea area 57 · -180° to 180° E, 0° to 58° N

in force: 26
last 12 months: 291
since 1957: 17,236
categories: 22

In force now · 26

NAVAREA XI 403/26 · Exercises2026-09-09
Gunnery exercise within 25 miles of 31-14-14N 144-26-48E in North Pacific, Nanpo Shoto, daily from 2100Z to 0900Z, Sep 13 to 17.
NAVAREA XI 400/26 · Nav aids2026-09-07
The Guam high-frequency NAVTEX station at 13-29.0N 144-50.0E in the Marianas, North Pacific, is off air.
NOAAORR-11215 · Spills2026-09-07
On September 7, 2026, a tanker truck carrying asphalt crashed into Trapper Slough near Stockton, California, causing an oil spill.
NOAAORR-11212 · Spills2026-08-30
On August 30, 2026, a sunken 25-foot vessel at Moss Landing, California is discharging diesel, creating a 50 by 100 yard sheen.
HYDROPAC 2457/26 · Exercises2026-08-27
Gunnery exercises occur daily from 2300Z to 0900Z, August 31 to September 29, in the North Pacific.
NAVAREA XI 392/26 · Exercises2026-08-27
Gunnery exercise daily 2300Z to 0900Z from Aug 31 to Sep 29 in North Pacific, Nanpo Shoto.
NAVAREA XII 586/26 · Exercises2026-08-21
Hazardous operations are underway off California from September 1 0800 UTC to October 1 0800 UTC in a defined area.
NAVAREA XII 584/26 · Exercises2026-08-21
Hazardous operations off California in an area bounded by 32-40N to 32-55N and 118-15W to 118-35W from September 1 to October 1.
NAVAREA XII 585/26 · Exercises2026-08-21
Hazardous operations are occurring off California in the North Pacific from September 1 to October 1 within a specified area.
NAVAREA XI 328/26 · Nav aids2026-07-21
The Number 1 lighted buoy at Malakal Harbor in the West Carolines, North Pacific, at 07-19.17N 134-27.17E, is missing.
HYDROPAC 2039/26 · Volcanic2026-07-16
Discolored water with increased likelihood of submarine volcanic activity is reported in Northern Mariana Islands vicinity at 20-26N 145-01E on July 16 at 0013Z.
NAVAREA XI 322/26 · Volcanic2026-07-16
Discoloured water reported near 20-26.0N 145-01.0E on 16 July at 0013Z; cancels warning 0020/24.
HYDROPAC 1906/26 · Nav aids2026-07-03
The United States Coast Guard's remote communication facility at Guam (13-29N 144-50E) has unreliable broadcast and communication services.
NAVAREA XII 678/25 · Structures2025-10-30
A fish farm has been established in an area off Colombia, from 06-03N to 07-11N and 077-28W to 078-08W; wide berth requested.
HYDROPAC 1819/25 · Wrecks2025-07-17
Depths between 5.4 and 18.8 meters reported at several positions in Marshall Islands, North Pacific.
NAVAREA XII 392/25 · Debris2025-06-24
Motor vessel Morning Midas is reported to have sunk in the North Pacific at 45-16.88N 179-14.13W; vessels should report oil sheens or debris to USCG.
HYDROPAC 1650/25 · Debris2025-06-24
Vessel Morning Midas sank in North Pacific at 45-16.88N 179-14.13W; navigate with caution and report debris or oil sheens.
NAVAREA XII 354/25 · Nav aids2025-06-13
Messaging services are unreliable at Coast Guard remote communication facilities at Point Reyes, Honolulu, Kodiak, Astoria, and Cambria.
NAVAREA XII 338/25 · Nav aids2025-06-07
The US Coast Guard remote communication facility at Astoria, Oregon (46-10.00N 123-49.00W), is off the air.
NAVAREA XII 208/25 · Nav aids2025-04-06
Punta Soldado light at 03-48.50N 077-10.80W is discontinued.
NAVAREA XII 862/24 · Cable ops2024-10-28
Cable operations are in progress in the eastern North Pacific near Kiribati until further notice; a 100-meter berth is requested.
NAVAREA XII 441/24 · Nav aids2024-06-18
Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.
NAVAREA XII 93/23 · Missiles2023-02-28
Periodic missile firing operations by Pacific Missile Range Facility, Barking Sands, Kauai, Hawaii, occur in Whiskey 188; vessels should contact on channel 16.
NAVAREA XII 721/22 · Nav aids2022-09-27
In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
NAVAREA XII 720/22 · Nav aids2022-09-27
Buoy 16 at Puerto de La Union, El Salvador, at 13-20.36N 087-48.99W is unlit.
NAVAREA XII 243/22 · Nav aids2022-04-15
Coronado Island South Light at 32-23.5N 117-14.5W is unlit; warning 159/21 is now cancelled.

Longest in force

By year

By month (all years)

By category · since 1997

Exercises	4,665	27%
Incidents	4,474	26%
Quakes	2,416	14%
Missiles	1,753	10%
Spills	777	5%
Nav aids	765	4%
Towing	532	3%
Other	513	3%
Derelicts	477	3%
Cable ops	229	1%
Debris	164	1%
Surveys	148	1%
Ordnance	116	1%
Containers	113	1%
Wrecks	37	0%
Storms	31	0%
Volcanic	13	0%
Restricted	6	0%
Mines	4	0%
Piracy	1	0%
Icebergs	1	0%
Structures	1	0%

Archive · 17,210 cancelled

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.