Surveys

Underwater operations 14 thru 20 mar by M/V natsushima with submersible in areas between: a. 34-20N 34-40N…

Western North Pacific · Japan · Nampo Shoto · HYDROPAC 676/13

issued: 2013-03-09 13:15Z
status: cancelled 2013-03-21 00:01Z (archive)
authority: NAVAREA XI 146/13 091146Z MAR 13.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
JAPAN.
NAMPO SHOTO.
1. UNDERWATER OPERATIONS 14 THRU 20 MAR BY M/V NATSUSHIMA
   WITH SUBMERSIBLE IN AREAS BETWEEN:
   A. 34-20N 34-40N AND 139-20E 139-45E.
   B. 31-40N 32-12N AND 139-30E 140-10E.
   C. 26-34N 26-46N AND 140-50E 141-10E.
   D. 28-33N 28-36N AND 140-36E 140-41E.
   E. 28-14N 28-24N AND 140-29E 140-39E.
   F. 35-00N 35-10N AND 139-05E 139-15E.
2. CANCEL THIS MSG 21 MAR 13.

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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.