North Pacific Ocean

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

in force
37
last 12 months
50
since 1993
9,583
categories
15

In force now · 37

  1. NAVAREA XI 380/26 · Exercises2026-08-22
    Hazardous operations are taking place in the Marianas area from 27 August 0200Z to 0600Z, with cancellation at 0700Z.
  2. NAVAREA XI 379/26 · Missiles2026-08-21
    Space debris operations are hazardous in the South China Sea and western North Pacific from 23 Aug 23:00 to 24 Aug 05:00 UTC, then cancelled at 06:00 UTC.
  3. NAVAREA XI 372/26 · Missiles2026-08-19
    Rocket firing is scheduled daily on August 23 and 29 from 2200Z to 1300Z within 25 miles of 31-14-14N 144-26-48E in the North Pacific near Nanpo Shoto.
  4. NAVAREA XII 548/26 · Exercises2026-08-13
    Hazardous operations occur off California in the North Pacific from August 18-19 and 20-21, with the notice valid until August 26.
  5. HYDROPAC 2320/26 · Missiles2026-08-12
    The warning for missile operations near Kuril Islands, North Pacific, covers 1400Z to 1000Z daily 16-22 August and is cancelled at 231100Z August.
  6. NAVAREA XII 552/26 · Exercises2026-08-12
    Hazardous operations are underway August 19 to 20 within two miles of 32-35.87N 117-10.87W.
  7. HYDROPAC 2296/26 · Nav aids2026-08-10
    The US Coast Guard remote communication facility near Guam at 13-29N 144-50E has unreliable high-frequency radio capabilities.
  8. NAVAREA XII 540/26 · Missiles2026-08-10
    Space debris hazard operations occur daily from August 13 to 26 in two North Pacific areas.
  9. HYDROPAC 2282/26 · Cable ops2026-08-10
    Cable operations by cableship Aniek are in progress until further notice along a trackline in the North Pacific near coordinates 45-07.40N 163-31.90E to 38-48.00N 147-55.50E. Wide berth requested.
  10. NAVAREA XI 364/26 · Cable ops2026-08-10
    Submarine cable recovery works by motor vessel Aniek in northwestern North Pacific from 092200Z Aug until further notice near coordinates 45-07N 163-32E to 38-48N 147-56E.
  11. NAVAREA XII 551/26 · Missiles2026-08-08
    Rocket launching hazardous operations in North Pacific off California from August 19 to 25, with daily alternate windows, in two areas near 34-29N 120-29W and 29-13N 121-31W.
  12. NAVAREA XII 539/26 · Missiles2026-08-04
    Hazardous rocket launching operations take place off California in multiple areas from August 15 to 22, with alternate dates.
  13. NAVAREA XII 523/26 · Cable ops2026-08-01
    Cable operations are underway by M/V Grace in the North Pacific along a trackline; a two-mile berth is requested.
  14. HYDROPAC 2152/26 · Exercises2026-07-27
    Gunnery exercises daily 2300-0900 Zulu, July 31 to August 30, North Pacific area bounded by 28-15N 146-30E, 25-25N 147-38E, 25-00N 145-36E, 27-55N 145-58E.
  15. NAVAREA XI 342/26 · Exercises2026-07-27
    Gunnery exercise in North Pacific near Nanpo Shoto daily from 31 July to 30 August, 2300Z to 0900Z, in a bounded area.
  16. HYDROPAC 2124/26 · Surveys2026-07-24
    Submersible survey operations are in areas near 22-40N 154-30E and 22-30N 153-45E in the North Pacific from July 25 to August 15; wide berth requested.
  17. NAVAREA XII 512/26 · Exercises2026-07-23
    Hazardous operations are scheduled off the California coast in the North Pacific from August 1 to September 1.
  18. NAVAREA XII 510/26 · Exercises2026-07-23
    Hazardous operations are underway off the coast of California from August 1 to September 1.
  19. NAVAREA XII 511/26 · Exercises2026-07-23
    Hazardous operations are occurring from August 1 to September 1 in the North Pacific off California.
  20. HYDROPAC 2100/26 · Cable ops2026-07-22
    Cable operations are underway until further notice by cableship Subaru near a trackline joining 36-44.60N 140-45.20E to 35-04.90N 156-51.80E off Japan; wide berth requested.
  21. 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.
  22. 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.
  23. 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.
  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.
  25. NAVAREA XII 678/25 · Other2025-10-30
    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.
  26. HYDROPAC 1819/25 · Wrecks2025-07-17
    Depths between 5.4 and 18.8 meters reported at several positions in Marshall Islands, North Pacific.
  27. 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.
  28. 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.
  29. 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.
  30. 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.
  31. NAVAREA XII 208/25 · Nav aids2025-04-06
    Punta Soldado light at 03-48.50N 077-10.80W is discontinued.
  32. 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.
  33. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.
  34. 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.
  35. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  36. 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.
  37. 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

  1. 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.
  2. 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.
  3. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  4. 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.
  5. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.

By year

93
96
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

By month (all years)

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

By category · since 1997

Exercises4,62348%
Missiles1,74518%
Other8259%
Nav aids7558%
Towing5326%
Derelicts4775%
Cable ops2252%
Surveys1502%
Containers1131%
Debris811%
Wrecks380%
Volcanic130%
Mines40%
Piracy10%
Icebergs10%

Archive · 9,546 cancelled

  1. NAVAREA XII 490/20 · Exercises2020-10-26 → 2020-10-31
    Hazardous operations 301400Z to 310400Z oct in area bound by 13-39-42N 090-47-12W, 13-39-42N 090-44-00W,…
  2. NAVAREA XII 489/20 · Exercises2020-10-26 → 2020-10-30
    Hazardous operations 281600Z to 281900Z oct, alternate 301600Z to 301900Z oct in area within 25 miles of…
  3. NAVAREA XII 488/20 · Exercises2020-10-26 → 2020-10-29
    Hazardous operations 291159Z to 292100Z oct in area bound by 33-27N 119-56W, 32-20N 120-55W, 32-28N 121-32W,…
  4. HYDROPAC 3133/20 · Exercises2020-10-26 → 2020-10-27
    Hazardous operations 262300Z to 271355Z oct in areas within three miles of: a. 13-26N 145-08E
  5. HYDROPAC 3121/20 · Exercises2020-10-25 → 2020-10-26
    Hazardous operations 252300Z to 261355Z oct in areas within three miles of: a. 13-26N 145-08E
  6. NAVAREA XII 485/20 · Exercises2020-10-25 → 2020-10-25
    Hazardous operations 292100Z to 291159Z oct in area bound by 33-27N 119-56W, 32-20N 120-55W, 32-28N 121-32W,…
  7. NAVAREA XII 484/20 · Other2020-10-23 → 2020-10-30
    Underwater ordnance detonation 271600Z to 300400Z oct in area within two miles of 21-17-29N 157-59-14W
  8. NAVAREA XII 481/20 · Exercises2020-10-23 → 2020-10-24
    Hazardous operations 231500Z to 232230Z and 241500Z to 242230Z oct in area bound by 33-19N 119-37W, 33-20N…
  9. NAVAREA XII 480/20 · Exercises2020-10-23 → 2020-10-27
    Hazardous operations 231500Z to 232230Z, 241500Z to 242230Z and 271500Z to 272230Z oct in area bound by…
  10. NAVAREA XII 479/20 · Exercises2020-10-23 → 2020-10-27
    Hazardous operations 271500Z to 272230Z oct in area bound by 33-52N 120-30W, 33-41N 119-54W, 33-24N 119-36W,…
  11. NAVAREA XII 478/20 · Exercises2020-10-23 → 2020-10-28
    Hazardous operations: a. 0631Z to 1359Z daily 28 thru 31 oct in area bound by 34-40N 121-18W, 34-57N…
  12. HYDROPAC 3097/20 · Exercises2020-10-23 → 2020-10-29
    Hazardous operations 280700Z to 281434Z oct, alternate 290726Z to 291500Z oct in areas bound by: a. 09-15N…
  13. HYDROPAC 3084/20 · Exercises2020-10-22 → 2020-10-23
    Hazardous operations 222300Z to 231355Z oct in areas within three miles of: a. 13-26N 145-08E
  14. HYDROPAC 3066/20 · Exercises2020-10-21 → 2020-10-22
    Hazardous operations 212300Z to 221355Z oct in areas within three miles of: a. 13-26N 145-08E
  15. HYDROPAC 3057/20 · Exercises2020-10-20 → 2020-10-21
    Hazardous operations 202300Z to 211355Z oct in areas within three miles of: a. 13-26N 145-08E
  16. NAVAREA XII 474/20 · Exercises2020-10-19 → 2020-10-20
    Hazardous operations 201030Z to 202000Z oct in areas bound by: a. 33-10.33N 121-08.72W, 33-29.30N…
  17. NAVAREA XII 473/20 · Other2020-10-19 → 2020-10-20
    An earthquake occurred at 192055Z oct with a preliminary magnitude of 7.4, preliminary location 54-07N 159-06W
  18. NAVAREA XII 470/20 · Exercises2020-10-17 → 2020-10-23
    Hazardous operations 221930Z to 230030Z oct in area within 22 miles of 34-39N 121-09W 2. cancel this msg…
  19. NAVAREA XII 465/20 · Exercises2020-10-15 → 2020-10-22
    Hazardous operations 1300Z to 2300Z daily 20 thru 22 oct in area bound by 14-40N 093-07W, 14-33N 092-57W,…
  20. NAVAREA XII 464/20 · Exercises2020-10-15 → 2020-10-22
    Hazardous operations 1300Z to 2300Z daily 20 thru 22 oct in area bound by 15-20N 097-15W, 15-10N 097-15W,…

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