Cable ops

Seismic survey 17 jan thru 23 feb by M/V polarcus amani in area bound by 18-15.63N 090-57.79E, 17-53.79N…

Bay of Bengal · HYDROPAC 167/17

What this record establishes

Archived notice · 2017-02-24 00:01Z

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 31/17 161001Z JAN 17.. Issued 2017-01-16 20:25Z. 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.

Current notices and reporting history in the Bay of Bengal →

issued
2017-01-16 20:25Z
status
Archived notice
authority
NAVAREA VIII 31/17 161001Z JAN 17.
NAVAREA
NAVAREA VIII · named as the source of this relay
sea
Bay of Bengal
position
17.942, 91.055
vessel
M/V POLARCUS AMANI · 13 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BAY OF BENGAL.
DNC 03.
1. SEISMIC SURVEY 17 JAN THRU 23 FEB
   BY M/V POLARCUS AMANI IN AREA BOUND BY
   18-15.63N 090-57.79E, 17-53.79N 091-31.78E,
   17-32.88N 091-17.10E, 18-00.46N 090-34.09E,
   18-15.48N 090-44.57E.
   2.2 MILE BERTH REQUESTED.
2. CANCEL THIS MSG 24 FEB 17.

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

45 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

23 cable & pipeline work listed in force · see all

Record snapshot 2026-09-24 23:52Z; 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.