Cable ops

Seismic survey 09 thru 16 jul by M/V barbaros hayreddin pasa, M/V bravo supporter and M/V kofso in area…

Sea of Marmara · HYDROLANT 1643/16

What this record establishes

Archived notice · 2016-07-14 13:05Z

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) · TURKEY 41/16 300501Z JUN 16.. Issued 2016-06-30 08:43Z. 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 Marmara. 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 Marmara →

issued
2016-06-30 08:43Z
status
Archived notice
authority
TURKEY 41/16 300501Z JUN 16.
issued by
TURKEY
sea
Sea of Marmara
position
40.628, 28.249
vessels
M/V BARBAROS HAYREDDIN PASA · 56 messagesM/V BRAVO SUPPORTER · 43 messagesM/V KOFSO · 13 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SEA OF MARMARA.
TURKEY.
DNC 10.
1. SEISMIC SURVEY 09 THRU 16 JUL BY
   M/V BARBAROS HAYREDDIN PASA,
   M/V BRAVO SUPPORTER AND M/V KOFSO
   IN AREA BOUND BY
   40-30.60N 027-59.63E, 40-44.53N 027-59.77E,
   40-44.70N 028-31.60E, 40-37.10N 028-30.67E,
   40-30.13N 028-26.03E.
   THREE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 17 JUL 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

108 within 180 nm since 1999 · 3 in the last 12 months · 2 listed in force now

99
00
05
10
15
20
25
26

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 2026-10-03 01:30Z; 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.