Underwater operations in progress until 15 apr by M/V blue castor along trackline joining 55-37.97N…
Baltic Sea · HYDROLANT 874/14
What this record establishes
Archived notice · 2014-04-16 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) · LITHUANIA 20/14 3110374Z MAR 14.. Issued 2014-03-31 10:51Z. 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
- Baltic Sea. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROLANT 874/14 and this msg, operations completedlater cancellation notice
- issued
- 2014-03-31 10:51Z
- status
- Archived notice
- authority
- LITHUANIA 20/14 3110374Z MAR 14.
- issued by
- LITHUANIA
- sea
- Baltic Sea
- position
- 55.792, 20.071
- vessel
- M/V BLUE CASTOR · 7 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN BALTIC SEA. LITHUANIA. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 15 APR BY M/V BLUE CASTOR ALONG TRACKLINE JOINING 55-37.97N 021-05.34E, 55-47.43N 020-05.75E, 55-56.90N 019-03.10E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 16 APR 14.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- 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.
- 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.
Collected reports in this area · survey operations
9 within 180 nm since 2009 · 0 in the last 12 months · 0 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.
- Survey operations in progress until 302359Z sep by M/V mintis in area bound by 55-17.2N 020-57.2E, 55-17.7N…2017-09-27
- Survey operations 20 and 21 aug by M/V askholmen along trackline between 55-37.92N 021-05.83E and 55-38.03N…2014-08-18
- Underwater operations in progress until further notice by M/V hein in area bound by 55-43.76N 021-03.54E,…2014-04-11
- Dredging operations in progress until further notice by M/V lange wapper, M/V M.P.R.1 and M/V musa in area…2012-04-18
- Underwater operations 08 thru 11 dec by M/V suduvis in area bound by 55-43.69N 021-04.60E, 55-43.81N…2009-12-04
- Survey operations by M/V suduvis: a. in progress until 11 sep in area bound by 56-00.00N 020-40.00E,…2009-09-08
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
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
55 survey operations listed in force · see all
Record snapshot 2026-10-02 07:58Z; 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.