Cable ops

Seismic survey in progress until 30 apr by M/V polarcus naila in area bound by 20-13.03N 092-00.27E,…

Bay of Bengal · HYDROPAC 690/16

What this record establishes

Archived notice · 2016-03-22 19:08Z

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) · NAVAREA VIII 186/16 101003Z MAR 16.. Issued 2016-03-10 16:50Z. 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
Bay of Bengal. 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 Bay of Bengal →

issued
2016-03-10 16:50Z
status
Archived notice
authority
NAVAREA VIII 186/16 101003Z MAR 16.
NAVAREA
NAVAREA VIII · named as the source of this relay
sea
Bay of Bengal
position
19.911, 91.846
vessel
M/V POLARCUS NAILA · 61 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BAY OF BENGAL.
BURMA.
DNC 03.
1. SEISMIC SURVEY IN PROGRESS UNTIL 30 APR BY
   M/V POLARCUS NAILA IN AREA BOUND BY
   20-13.03N 092-00.27E, 20-05.27N 092-09.73E,
   19-57.32N 092-01.71E, 20-00.11N 091-56.93E,
   19-42.01N 091-43.42E, 19-35.97N 091-47.06E,
   19-36.00N 091-31.43E, 20-03.47N 091-50.67E.
   4000 METER BERTH REQUESTED.
2. CANCEL THIS MSG 01 MAY 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.
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.
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

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

01
05
10
15
20
23

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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-02 06:34Z; 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.