Surveys

Underwater research operations during daylight hours daily 18 thru 30 mar by M/V yokosuka and submersible…

HYDROPAC 477/04

issued: 2004-03-13 15:45Z
status: cancelled 2004-03-31 00:00Z (archive)
authority: NAVAREA XI 124/04 13 MAR 04
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER RESEARCH OPERATIONS DURING
   DAYLIGHT HOURS DAILY 18 THRU 30 MAR
   BY M/V YOKOSUKA AND SUBMERSIBLE SHINKAI 6500
   IN AREA BETWEEN 14-30N 15-30N AND 132-30E 133-30E.
2. CANCEL THIS MSG 31 MAR.

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Worldwide now

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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.