Surveys

Submarine research operations during daylight hours 03 thru 11 apr by M/V yokosuka and submersible shinkai…

HYDROPAC 510/05

issued: 2005-03-29 08:52Z
status: cancelled 2005-04-12 00:00Z (archive)
authority: NAVAREA XI 143/05 290800Z MAR 05.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. SUBMARINE RESEARCH OPERATIONS DURING DAYLIGHT HOURS
   03 THRU 11 APR BY M/V YOKOSUKA AND SUBMERSIBLE
   SHINKAI 6500 IN AREA BETWEEN
   27-00N 27-30N AND 138-30E 141-00E.
2. CANCEL THIS MSG 12 APR.

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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.