Surveys
Underwater operations 192300Z to 220600Z sep vicinity of trackline between 28-20N 138-42W and 22-11N 155-10W
NAVAREA XII 252/03
- issued
- 2003-09-16 10:10Z
- status
- cancelled 2003-09-22 07:00Z (archive)
- self-cancels
- 2003-09-22 07:00Z
- cancels
- NAVAREA XII 251/03
- authority
- USS MUSTIN 15 SEP 03; COGARD NAVCEN 160448Z SEP 03
- sea
- North Pacific Ocean
- position
- 25.258, -146.933
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS 192300Z TO 220600Z SEP VICINITY OF TRACKLINE BETWEEN 28-20N 138-42W AND 22-11N 155-10W. 2. CANCEL NAVAREA XII 251/03(16,17), STATION RESTORED. 3. CANCEL THIS MSG 220700Z SEP.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2003-09-19 23:00Z | 2003-09-22 06:00Z | — | 55 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · survey operations
1 within 180 nm since 2003 · 0 in the last 12 months · 0 in force now
Season · when survey operations happen here
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F
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A
M
J
J
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month of issue, all years in the archive
Timeline
- Loran-c station port clarence, rate 7960-Z, unusablecancels · 2003-09-16
- Loran-c station port clarence, rate 7960-Z, unusablereplaced · 2003-09-16
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
84 survey operations in force · see all
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.