Other

Pipelaying operations 01 sep thru 07 apr along trackline between 41-04.8N 029-03.9E and 41-04.6N 029-03.8E

Sea of Marmara · HYDROLANT 1637/03

What this record establishes

Archived notice · 2003-09-29 11:20Z

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 III 631/03 270737Z AUG 03; RCC HALIFAX AOR-W EGC#041 270629Z AUG 03. Issued 2003-08-27 08:20Z. 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 the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Current notices and reporting history in the Sea of Marmara →

issued
2003-08-27 08:20Z
status
Archived notice
authority
NAVAREA III 631/03 270737Z AUG 03; RCC HALIFAX AOR-W EGC#041 270629Z AUG 03
NAVAREA
NAVAREA III · named as the source of this relay
sea
Sea of Marmara
position
41.078, 29.064
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. PIPELAYING OPERATIONS 01 SEP THRU 07 APR
   ALONG TRACKLINE BETWEEN
   41-04.8N 029-03.9E AND 41-04.6N 029-03.8E.
2. CANCEL HYDROLANT 1636/03(14,38).
3. CANCEL THIS MSG 08 APR 04.

Reading this warning

Track line joining
Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
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.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROLANT
The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean 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 · other warnings

19 within 180 nm since 1999 · 1 in the last 12 months · 0 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

Worldwide in the collected sources

21 other warnings listed in force · see all

Record snapshot 2026-10-02 22:46Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.