Surveys
Underwater operations 20 thru 27 mar by M/V shinkai 6500 and M/V yokosuka in areas bound by: a. 28-33.5N…
Philippine Sea · Japan · HYDROPAC 874/21
- issued
- 2021-03-19 14:01Z
- status
- cancelled 2021-03-28 00:01Z (archive)
- authority
- NAVAREA XI 88/21 191205Z MAR 21.
- position
- 27.210, 140.963
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
PHILIPPINE SEA.
JAPAN.
DNC 12.
1. UNDERWATER OPERATIONS 20 THRU 27 MAR
BY M/V SHINKAI 6500 AND M/V YOKOSUKA
IN AREAS BOUND BY:
A. 28-33.5N 140-38.0E, 28-35.0N 140-38.0E,
28-35.0N 140-39.0E, 28-33.5N 140-39.0E.
B. 26-41.0N 141-04.0E, 26-43.0N 141-04.0E,
26-43.0N 141-06.0E, 26-41.0N 141-06.0E.
WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 28 MAR 21.
This area · survey operations
44 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
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24
- Underwater operations 04 thru 21 may by submersible shinkai 6500 and M/V yokosuka in area bound by 28-22.00N…2024-05-03
- Underwater operations 01 thru 07 mar by M/V yokosuka with submersible shinkai 6500 in areas bound by: a.…2024-02-29
- Underwater operations 20 oct thru 06 nov by shinkai 6500, mother ship and yokosuka in areas within three…2023-10-19
- Underwater operations 24 thru 28 aug by M/V yokosuka with submersible shinkai 6500 in area bound by…2023-08-23
- Underwater operations 20 thru 27 sep by M/V shinkai 6500, mother ship, and yokosuka with subersible in area…2022-09-19
- Underwater operations 11 thru 13 mar by M/V yokosuka with submersible shinkai 6500 in area bound by 26-10N…2022-03-06
Season · when survey operations happen here
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month of issue, all years in the archive
Nearby now · within 120 nm
- Discoloured water observedVolcanic · 2.4 nm
- Discoloured water observed in extending south for 5 miles, 2 mile wide, from 27-16.7N 140-56.6E at 120643Z octVolcanic · 4.2 nm
- 180500UTC issued at 180500UTC dec 2020 volcanic warning volcano name:nishino shima LOCATION:27-14.6N…Volcanic · 4.9 nm
- Chichi shima, futami ko NR.3 light buoy, 27-04.9N 142-11.2E, L.LNav aids · 65.8 nm
- Discoloured water observed in vicinity of 25-27.1N 141-14.5E at 140425Z junVolcanic · 106.6 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.