Surveys

Underwater operations 121900Z to 130200Z sep within 40 miles of 28-00N 140-00W

NAVAREA XII 243/03

issued: 2003-09-09 10:20Z
status: cancelled 2003-09-10 10:10Z (archive)
self-cancels: 2003-09-13 03:00Z
authority: CTU 30.6.8 090825Z SEP 03
sea: North Pacific Ocean
position: 28.000, -140.000 · r 40.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER OPERATIONS 121900Z TO 130200Z SEP
   WITHIN 40 MILES OF 28-00N 140-00W.
2. CANCEL THIS MSG 130300Z SEP.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2003-09-12 19:00Z	2003-09-13 02:00Z	—	7 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

2 within 180 nm since 2003 · 0 in the last 12 months · 0 in force now

Oceanographic operations 08 may thru 03 jun by M/V melville vicinity of trackline joining 30-00N 167-00W,…2013-05-04

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Cancel NAVAREA XII 243/03 and this msg, operations canceledcancelled by · 2003-09-10

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.