Cable ops

Seismic survey in progress until 01 aug by M/V hai yang shi you 718 towing 3.3 mile long cable in area bound…

Sea of Okhotsk · HYDROPAC 2054/16

What this record establishes

Archived notice · 2016-07-11 09:37Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · VLAD 178/16 080858Z JUL 16.. Issued 2016-07-08 09:36Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Sea of Okhotsk. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Sea of Okhotsk →

issued
2016-07-08 09:36Z
status
Archived notice
authority
VLAD 178/16 080858Z JUL 16.
issued by
VLAD
sea
Sea of Okhotsk
position
51.542, 143.623
vessel
M/V HAI YANG SHI YOU 718 · 4 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SEA OF OKHOTSK.
SAKHALIN-EAST COAST.
DNC 24.
1. SEISMIC SURVEY IN PROGRESS UNTIL 01 AUG BY
   M/V HAI YANG SHI YOU 718 TOWING 3.3 MILE
   LONG CABLE IN AREA BOUND BY
   51-23.4N 143-32.0E, 51-39.8N 143-23.9E,
   51-39.5N 143-44.5E, 51-27.7N 143-51.1E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL HYDROPAC 1961/16.
3. CANCEL THIS MSG 02 AUG 16.

Reading this warning

DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Seismic survey
A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
Tow / towing
A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
Area bound by
Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Wide berth requested
Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROPAC
The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · cable & pipeline work

37 within 180 nm since 2001 · 0 in the last 12 months · 0 listed in force now

01
05
10
15
18

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

Worldwide in the collected sources

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-02 03:53Z; source collection times vary.

Cable ops

Cable laying, pipeline and seismic operations. All current cable & pipeline work →

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.