Surveys

Underwater operations 25 thru 30 apr by M/V natsushima with submersible in areas between: a. 31-42N 32-12N…

Western North Pacific · Japan · Nampo Shoto · HYDROPAC 1140/12

issued: 2012-04-20 14:57Z
status: cancelled 2012-05-01 00:01Z (archive)
authority: NAVAREA XI 244/12 201148Z APR 12.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
JAPAN.
NAMPO SHOTO.
1. UNDERWATER OPERATIONS 25 THRU 30 APR
   BY M/V NATSUSHIMA WITH SUBMERSIBLE
   IN AREAS BETWEEN:
   A. 31-42N 32-12N AND 139-34E 140-10E.
   B. 28-33N 28-36N AND 140-37E 140-41E.
   C. 31-27N 31-33N AND 140-00E 140-07E.
2. CANCEL THIS MSG 01 MAY.

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.