Surveys

Underwater operations 13 nov thru 11 dec by M/V koyo maru in area between 19-00N 24-30N and 152-30E 161-00E

Western North Pacific · HYDROPAC 4084/18

issued: 2018-11-12 11:42Z
status: cancelled 2018-12-12 00:01Z (archive)
self-cancels: 2018-12-12 00:01Z
authority: NAVAREA XI 584/18 111139Z NOV 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
DNC 12.
1. UNDERWATER OPERATIONS 13 NOV THRU 11 DEC BY
   M/V KOYO MARU IN AREA BETWEEN
   19-00N 24-30N AND 152-30E 161-00E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 120001Z DEC 18.

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.