Surveys

Underwater operations in progress until further notice by M/V petrovsk within one mile of 40-55.6N 028-50.4E

Sea of Marmara · HYDROLANT 535/06

What this record establishes

Archived notice · 2006-06-07 14:57Z

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 157/06 180750Z MAR 06.. Issued 2006-03-18 11:50Z. 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: Sea of Marmara. The parsed report position is 40.927, 28.840 with a 1.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the Sea of Marmara →

issued: 2006-03-18 11:50Z
status: Archived notice
authority: NAVAREA III 157/06 180750Z MAR 06.
NAVAREA: NAVAREA III · named as the source of this relay
sea: Sea of Marmara
position: 40.927, 28.840 · r 1.0 nm
vessel: M/V PETROVSK
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

UNDERWATER OPERATIONS IN PROGRESS
UNTIL FURTHER NOTICE BY M/V PETROVSK
WITHIN ONE MILE OF 40-55.6N 028-50.4E.

Reading this warning

Underwater operations: Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
Until further notice: The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
Within a radius of: A circular area — every position within a stated distance of a point.
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.

All warning terms →

Collected reports in this area · survey operations

136 within 180 nm since 1999 · 9 in the last 12 months · 5 listed in force now

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

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

Drilling operations by fatih platform (imo 9503770Surveys · 96 nm

Worldwide in the collected sources

56 survey operations listed in force · see all

Record snapshot 2026-10-03 03:15Z; source collection times vary.

Surveys

Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →

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.