Surveys

Underwater operations 20 thru 24 jul by M/V yokosuka with submersible: a. in area bound by 34-55.0N…

Western North Pacific · Philippine Sea · Japan · HYDROPAC 2163/16

issued
2016-07-19 12:10Z
status
cancelled 2016-07-25 00:01Z (archive)
authority
NAVAREA XI 432/16 191153Z JUL 16.
position
35.071, 139.330
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
PHILIPPINE SEA.
JAPAN.
DNC 12.
1. UNDERWATER OPERATIONS 20 THRU 24 JUL
   BY M/V YOKOSUKA WITH SUBMERSIBLE:
   A. IN AREA BOUND BY
      34-55.0N 139-13.5E, 35-00.0N 139-06.5E,
      35-14.0N 139-13.0E, 35-14.0N 139-30.0E,
      34-55.0N 139-30.0E.
   B. IN AREA BETWEEN
      31-20.0N 32-40.0N AND 139-30.0E 140-10.0E.
   C. ALTERNATE IN AREA BETWEEN
      33-00.0N 33-40.0N AND 139-15.0E 139-45.0E.
   D. ALTERNATE IN AREA BETWEEN
      28-00.0N 28-45.0N AND 140-00.0E 141-00.0E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 25 JUL 16.

This area · survey operations

19 within 180 nm since 2006 · 0 in the last 12 months · 0 in force now

06
10
15
19

Season · when survey operations happen here

J
F
M
A
M
J
J
A
S
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N
D

month of issue, all years in the archive

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

73 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.