merchant vessel · named in official warnings

M/V Polar Empress

24 messages · 2015-06-05 to 2019-12-02

status: no warning in force
first mention: 2015-06-05 19:53Z
latest mention: 2019-12-02 19:57Z
reported as: Cable ops3 Surveys21
seas: North Atlantic Ocean North Sea Norwegian Sea Adriatic Sea Black Sea Ionian Sea Kara Sea Arabian Sea Andaman or Burma Sea
last position: 42.467, 31.313

Track · one row per mention

mentions: 24
span: 1,641 d
in force: 1,060 d
along track: 28,510.9 nm
first → last: 2,110.1 nm

issued	type	where	position	status
2015-06-05	Cable ops	Arctic · Barents Sea · Norwegian Sea	—	→ 2015-07-02
2015-07-03	Cable ops	Arctic · Kara Sea	72.38, 65.65	→ 2015-09-16
2015-12-07	Surveys	Eastern Mediterranean Sea · Ionian Sea	37.51, 20.20	→ 2015-12-09
2015-12-09	Surveys	Eastern Mediterranean Sea · Ionian Sea	37.58, 20.28	→ 2015-12-16
2016-08-26	Cable ops	Arctic · Kara Sea	75.03, 70.16	→ 2016-11-11
2017-04-12	Surveys	Norwegian Sea · Norway	63.13, 2.19	→ 2017-05-15
2017-05-17	Surveys	Norwegian Sea · Norway	71.78, 17.39	→ 2017-09-12
2017-05-17	Surveys	Norwegian Sea · Norway	71.78, 17.39	→ 2017-09-12
2017-09-12	Surveys	Norwegian Sea · Barents Sea · Norway	72.02, 22.69	→ 2017-11-17
2018-01-12	Surveys	Andaman Sea	12.91, 96.02	→ 2018-01-17
2018-01-17	Surveys	Andaman Sea	12.91, 96.02	→ 2018-06-01
2018-08-20	Surveys	Eastern North Atlantic · Morocco	29.79, -10.54	→ 2018-11-01
2018-11-02	Surveys	Adriatic Sea · Serbia and Montenegro	41.79, 18.77	→ 2019-01-01
2019-01-01	Surveys	Arabian Sea · Oman	18.04, 57.41	→ 2019-02-04
2019-02-04	Surveys	Arabian Sea · Oman	18.06, 57.27	→ 2019-02-06
2019-02-06	Surveys	Arabian Sea · Oman	18.06, 57.27	→ 2019-03-22
2019-04-03	Surveys	Black Sea · Turkey	42.93, 31.36	→ 2019-05-16
2019-05-27	Surveys	North Sea · Scotland	—	→ 2019-06-14
2019-07-11	Surveys	Norwegian Sea · Norway	—	→ 2019-08-01
2019-08-03	Surveys	North Sea · England	54.89, 0.40	→ 2019-08-23
2019-09-04	Surveys	Black Sea · Turkey	41.56, 40.39	→ 2019-11-19
2019-11-20	Surveys	Black Sea · Turkey	42.02, 28.93	→ 2019-12-05
2019-11-20	Surveys	Black Sea · Turkey	42.47, 31.31	→ 2019-11-24
2019-12-02	Surveys	Black Sea · Turkey	42.47, 31.31	→ 2019-12-06

Messages · 24, oldest first

Cable ops·HYDROARC 105/152015-06-05 19:53Z → cancelled 2015-07-02 19:19Z

Seismic survey in progress until further notice by M/V polar empress towing 14 6000 meter long cables in…

Arctic · Barents Sea · Norwegian Sea

ARCTIC.
BARENTS SEA.
NORWEGIAN SEA.
DNC 22.
SEISMIC SURVEY IN PROGRESS UNTIL FURTHER
NOTICE BY M/V POLAR EMPRESS TOWING 14
6000 METER LONG CABLES IN AREA BOUND BY
72-19.3N 21-11.7E, 72-19.2N 20-03.1E,
73-26.0N 21-48.1E, 73-25.7N 23-04.7E,
73-17.9N 23-50.5E, 73-13.8N 24-05.3E,
73-32.6N 24-38.9E, 73-32.1N 24-43.0E,
73-12.7N 24-09.1E, 73-05.8N 24-33.1E,
72-02.5N 22-47.7E, 72-02.5N 21-12.3E.
FIVE MILE BERTH REQUESTED.

Cable ops·HYDROARC 159/152015-07-03 19:51Z → cancelled 2015-09-16 00:01Z

Seismic survey in progress until 15 sep by M/V polar empress towing 14 6000 meter long cables in area bound…

Arctic · Kara Sea · Kara Sea

ARCTIC.
KARA SEA.
DNC 22.
1. SEISMIC SURVEY IN PROGRESS UNTIL 15 SEP BY
   M/V POLAR EMPRESS TOWING 14
   6000 METER LONG CABLES IN AREA BOUND BY
   71-57.38N 064-42.64E, 72-48.37N 064-39.42E,
   72-47.99N 066-38.61E, 71-57.55N 066-36.38E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL HYDROARC 103/15.
3. CANCEL THIS MSG 16 SEP 15.

Surveys·HYDROLANT 3035/152015-12-07 16:48Z → cancelled 2015-12-09 02:20Z

Oceanographic operations in progress until 09 dec by M/V polar empress towing 12 8000 meter long cables in…

Eastern Mediterranean Sea · Ionian Sea · Ionian Sea

EASTERN MEDITERRANEAN SEA.
IONIAN SEA.
DNC 09.
1. OCEANOGRAPHIC OPERATIONS IN PROGRESS UNTIL 09 DEC
   BY M/V POLAR EMPRESS TOWING 12
   8000 METER LONG CABLES IN AREA BOUND BY
   38-40.5N 019-02.9E, 38-57.5N 019-34.1E,
   36-26.8N 021-19.5E, 36-03.7N 020-47.0E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 10 DEC 15.

Surveys·HYDROLANT 3048/152015-12-09 02:20Z → cancelled 2015-12-16 12:33Z

Oceanographic operations in progress until further notice by M/V polar empress towing 12 8000 meter long…

Eastern Mediterranean Sea · Ionian Sea · Ionian Sea

EASTERN MEDITERRANEAN SEA.
IONIAN SEA.
DNC 09.
1. OCEANOGRAPHIC OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE
   BY M/V POLAR EMPRESS TOWING 12
   8000 METER LONG CABLES IN AREAS BOUND BY:
   A. 38-24.9N 020-45.1E, 38-28.3N 020-53.6E,
      38-16.0N 021-13.0E, 38-03.0N 021-18.3E,
      37-49.8N 020-54.2E, 38-00.0N 020-47.5E,
      38-07.3N 020-49.5E, 38-14.1N 020-43.4E.
   B. 38-40.5N 019-02.9E, 38-57.5N 019-34.1E,
      36-26.8N 021-19.5E, 36-03.7N 020-47.0E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 3035/15.

Cable ops·HYDROARC 188/162016-08-26 18:31Z → cancelled 2016-11-11 00:01Z

Seismic survey 01 sep thru 10 nov by M/V polar empress towing twelve 6000 meter cables in area bound by…

Arctic · Kara Sea · Kara Sea

ARCTIC.
KARA SEA.
DNC 22.
1. SEISMIC SURVEY 01 SEP THRU 10 NOV BY M/V POLAR EMPRESS
   TOWING TWELVE 6000 METER CABLES IN AREA BOUND BY
   75-03.2N 068-36.7E, 75-07.5N 069-20.3E,
   75-06.4N 069-32.9E, 75-15.5N 071-12.0E,
   75-14.4N 071-57.9E, 75-07.3N 072-10.2E,
   74-58.9N 070-35.9E, 74-49.1N 070-00.8E,
   74-45.0N 069-18.9E, 74-56.3N 068-30.9E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 11 NOV 16.

Surveys·HYDROLANT 1175/172017-04-12 17:21Z → cancelled 2017-05-15 11:18Z

Survey operations in progress until further notice by M/V polar empress and M/V polar duchess each towing 12…

Norwegian Sea · Norway · Norwegian Sea

NORWEGIAN SEA.
NORWAY.
DNC 20, DNC 21.
SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE
BY M/V POLAR EMPRESS AND M/V POLAR DUCHESS EACH
TOWING 12 8100 METER LONG CABLES
IN AREA BOUND BY
64-20N 001-15E, 63-50N 005-00E,
61-50N 003-30E, 62-40N 001-00W.
WIDE BERTH REQUESTED.

Surveys·HYDROLANT 1561/172017-05-17 19:15Z → cancelled 2017-09-12 20:02Z

Survey operations in progress until further notice by M/V polar empress towing equipment in area bound by…

Norwegian Sea · Norway · Norwegian Sea

NORWEGIAN SEA.
NORWAY.
DNC 22.
1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER
   NOTICE BY M/V POLAR EMPRESS TOWING
   EQUIPMENT IN AREA BOUND BY
   72-30N 015-41E, 72-30N 018-55E,
   71-16N 019-09E, 71-01N 017-54E,
   71-01N 015-57E, 72-30N 015-41E.
   SIX MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 1517/17.

Surveys·HYDROARC 81/172017-05-17 19:49Z → cancelled 2017-09-12 19:49Z

Survey operations in progress until further notice by M/V polar empress towing equipment in area bound by…

Norwegian Sea · Norway · Norwegian Sea

NORWEGIAN SEA.
NORWAY.
DNC 22.
1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER
   NOTICE BY M/V POLAR EMPRESS TOWING
   EQUIPMENT IN AREA BOUND BY
   72-30N 015-41E, 72-30N 018-55E,
   71-16N 019-09E, 71-01N 017-54E,
   71-01N 015-57E, 72-30N 015-41E.
   SIX MILE BERTH REQUESTED.
2. CANCEL HYDROARC 76/17.

Surveys·HYDROARC 268/172017-09-12 19:49Z → cancelled 2017-11-17 18:36Z

Survey operations in progress until further notice by M/V polar empress towing 6000 meter long cables in…

Norwegian Sea · Barents Sea · Norway · Norwegian Sea

NORWEGIAN SEA.
BARENTS SEA.
NORWAY.
DNC 22.
1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE
   BY M/V POLAR EMPRESS TOWING 6000 METER LONG CABLES
   IN AREA BOUND BY
   70-46N 020-13E, 72-54N 020-13E,
   72-54N 025-31E, 71-25N 025-31E,
   71-21N 023-45E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL HYDROARC 81/17.

Surveys·HYDROPAC 156/182018-01-12 11:18Z → cancelled 2018-01-17 14:53Z

Survey operations 15 jan thru 31 may by M/V polar empress in area bound by 13-19.7N 096-18.5E, 13-29.6N…

Andaman Sea · Andaman or Burma Sea

ANDAMAN SEA.
DNC 03.
1. SURVEY OPERATIONS 15 JAN THRU 31 MAY BY
   M/V POLAR EMPRESS IN AREA BOUND BY
   13-19.7N 096-18.5E, 13-29.6N 096-17.8E,
   13-29.7N 096-09.9E, 13-40.0N 096-08.9E,
   13-46.0N 096-06.5E, 13-43.6N 095-44.3E,
   13-38.8N 095-44.1E, 13-30.8N 095-31.7E,
   13-21.2N 095-32.6E, 12-41.4N 095-44.3E,
   12-38.9N 095-37.3E, 12-09.7N 095-44.3E,
   12-09.3N 096-20.8E, 12-12.2N 096-27.1E,
   12-22.6N 096-24.6E, 12-24.4N 096-30.6E,
   12-49.9N 096-29.1E, 13-00.2N 096-24.4E.
   2.5 MILE BERTH REQUESTED.
2. CANCEL THIS MSG 01 JUN 18.

Surveys·HYDROPAC 229/182018-01-17 14:53Z → cancelled 2018-06-01 00:01Z

Survey operations in progress until 31 may by M/V polar empress in area bound by 13-19.7N 096-18.5E,…

Andaman Sea · Andaman or Burma Sea

ANDAMAN SEA.
DNC 03.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 31 MAY BY
   M/V POLAR EMPRESS IN AREA BOUND BY
   13-19.7N 096-18.5E, 13-29.6N 096-17.8E,
   13-29.7N 096-09.9E, 13-40.0N 096-08.9E,
   13-46.0N 096-06.5E, 13-43.6N 095-44.3E,
   13-38.8N 095-44.1E, 13-30.8N 095-31.7E,
   13-21.2N 095-32.6E, 12-41.4N 095-44.3E,
   12-38.9N 095-37.3E, 12-09.7N 095-44.3E,
   12-09.3N 096-20.8E, 12-12.2N 096-27.1E,
   12-22.6N 096-24.6E, 12-24.4N 096-30.6E,
   12-49.9N 096-29.1E, 13-00.2N 096-24.4E.
   2.5 MILE BERTH REQUESTED.
2. CANCEL HYDROPAC 156/18.
3. CANCEL THIS MSG 01 JUN 18.

Surveys·HYDROLANT 2661/182018-08-20 13:45Z → cancelled 2018-11-01 00:59Z

Survey operations in progress until 312359Z oct by M/V polar empress towing ten 7050 meter long cables in…

Eastern North Atlantic · Morocco · North Atlantic Ocean

EASTERN NORTH ATLANTIC.
MOROCCO.
DNC 01, DNC 08.
1. SURVEY OPERATIONS IN PROGRESS UNTIL
   312359Z OCT BY M/V POLAR EMPRESS TOWING TEN
   7050 METER LONG CABLES IN AREA BOUND BY
   29-33.3N 010-38.1W, 29-11.3N 011-00.4W,
   29-30.6N 011-18.5W, 29-45.1N 010-49.2W,
   29-59.1N 010-39.1W, 30-20.4N 009-58.3W,
   30-08.4N 009-47.3W, 29-39.3N 010-21.0W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 010059Z NOV 18.

Surveys·HYDROLANT 3416/182018-11-02 13:39Z → cancelled 2019-01-01 00:01Z

Survey operations 07 nov thru 31 dec by M/V polar empress towing one five mile long cable in area bound by…

Adriatic Sea · Serbia and Montenegro · Adriatic Sea

ADRIATIC SEA.
SERBIA AND MONTENEGRO.
DNC 09.
1. SURVEY OPERATIONS 07 NOV THRU 31 DEC BY
   M/V POLAR EMPRESS TOWING ONE
   FIVE MILE LONG CABLE IN AREA BOUND BY
   42-11.0N 018-28.0E, 42-11.0N 018-53.7E,
   42-04.2N 019-04.7E, 41-45.2N 019-06.0E,
   41-32.0N 019-06.0E, 41-25.0N 018-58.8E
   41-25.0N 018-28.0E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 01 JAN 19.

Surveys·HYDROPAC 3/192019-01-01 14:21Z → cancelled 2019-02-04 15:06Z

Survey operations 03 jan thru 31 mar by M/V polar empress towing five 805 meter long cables in area bound by…

Arabian Sea · Oman · Arabian Sea

ARABIAN SEA.
OMAN.
DNC 10.
1. SURVEY OPERATIONS 03 JAN THRU 31 MAR
   BY M/V POLAR EMPRESS TOWING FIVE
   805 METER LONG CABLES IN AREA BOUND BY
   18-41.10N 057-05.26E, 17-58.23N 057-59.80E,
   17-27.30N 057-32.26E, 18-02.11N 056-56.57E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 01 APR 19.

Surveys·HYDROPAC 413/192019-02-04 15:06Z → cancelled 2019-02-06 13:36Z

Survey operations in progress until 31 mar by M/V polar empress towing five 805 meter long cables in areas…

Arabian Sea · Oman · Arabian Sea

ARABIAN SEA.
OMAN.
DNC 10.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 31 MAR
   BY M/V POLAR EMPRESS TOWING FIVE
   805 METER LONG CABLES IN AREAS BOUND BY
   A. 18-41.10N 057-05.26E, 17-58.23N 057-59.80E,
      17-27.30N 057-32.26E, 18-02.11N 056-56.57E.
   B. 18-41.03N 057-05.45E, 18-19.21N 057-33.01E,
      17-43.32N 057-01.90E, 17-45.07N 056-59.88E,
      17-42.47N 056-46.38E, 17-45.19N 056-43.22E,
      17-59.29N 056-43.73E, 18-06.21N 056-35.09E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROPAC 3/19.
3. CANCEL THIS MSG 01 APR 19.

Surveys·HYDROPAC 435/192019-02-06 14:07Z → cancelled 2019-03-22 12:01Z

Survey operations in progress until 31 mar by M/V polar empress towing five 805 meter long cables in areas…

Arabian Sea · Oman · Arabian Sea

ARABIAN SEA.
OMAN.
DNC 10.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 31 MAR
   BY M/V POLAR EMPRESS TOWING FIVE
   805 METER LONG CABLES IN AREAS BOUND BY
   A. 18-41.10N 057-05.26E, 17-58.23N 057-59.80E,
      17-27.30N 057-32.26E, 18-02.11N 056-56.57E.
   B. 18-41.03N 057-05.45E, 18-19.21N 057-33.01E,
      17-43.32N 057-01.90E, 17-45.07N 056-59.88E,
      17-42.47N 056-46.38E, 17-45.19N 056-43.22E,
      17-59.29N 056-43.73E, 18-06.21N 056-35.09E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 01 APR 19.

Surveys·HYDROLANT 1051/192019-04-03 08:55Z → cancelled 2019-05-16 08:33Z

Survey operations in progress until 02 jun by M/V polar empress, M/V 7 waves and M/V ocean mermaid in area…

Black Sea · Turkey · Black Sea

BLACK SEA.
TURKEY.
DNC 10.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 02 JUN
   BY M/V POLAR EMPRESS, M/V 7 WAVES AND
   M/V OCEAN MERMAID IN AREA BOUND BY
   43-02.52N 030-57.82E, 43-02.92N 031-24.30E,
   43-08.75N 031-24.15E, 43-09.02N 031-45.37E,
   42-57.47N 031-45.60E, 42-57.35N 031-36.77E,
   42-45.30N 031-37.00E, 42-44.73N 030-58.37E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 03 JUN 19.

Surveys·HYDROLANT 1598/192019-05-27 04:29Z → cancelled 2019-06-14 23:40Z

Survey operations in progress until further notice by M/V polar empress towing 8100 meter long cables in…

North Sea · Scotland

NORTH SEA.
SCOTLAND.
DNC 20.
SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER
NOTICE BY M/V POLAR EMPRESS TOWING 8100 METER
LONG CABLES IN AREA BETWEEN
57-10N 56-30N AND 000-00E 001-00E.
SIX MILE BERTH REQUESTED.

Surveys·HYDROLANT 2090/192019-07-11 11:45Z → cancelled 2019-08-01 02:00Z

Survey operations in progress until 010100Z aug by M/V polar empress in area between 63-50N 63-10N and…

Norwegian Sea · Norway

NORWEGIAN SEA.
NORWAY.
DNC 20.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 010100Z AUG
   BY M/V POLAR EMPRESS IN AREA BETWEEN
   63-50N 63-10N AND 004-00E 005-18E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 010200Z AUG 19.

Surveys·HYDROLANT 2386/192019-08-03 15:22Z → cancelled 2019-08-23 09:34Z

Survey operations in progress until further notice by M/V polar empress in area bound by 55-15.6N 000-26.6W,…

North Sea · England · North Sea

NORTH SEA.
ENGLAND.
DNC 20.
SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER
NOTICE BY M/V POLAR EMPRESS IN AREA BOUND BY
55-15.6N 000-26.6W, 55-15.6N 001-14.4E,
54-31.2N 001-14.4E, 54-31.2N 000-26.6W.
SIX MILE BERTH REQUESTED.

Surveys·HYDROLANT 2710/192019-09-04 17:08Z → cancelled 2019-11-19 10:41Z

Survey operations in progress until 31 dec by M/V polar empress, M/V andromeda and M/V mainport kells in…

Black Sea · Turkey · Black Sea

BLACK SEA.
TURKEY.
DNC 10.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 31 DEC BY
   M/V POLAR EMPRESS, M/V ANDROMEDA AND
   M/V MAINPORT KELLS IN AREA BOUND BY
   41-17.65N 039-43.84E, 41-08.03N 040-07.19E,
   41-10.10N 040-18.73E, 41-13.09N 040-35.09E,
   41-28.65N 040-48.61E, 41-44.53N 041-01.66E,
   41-45.64N 041-00.01E, 41-45.64N 041-00.01E,
   41-57.03N 040-41.53E, 42-03.12N 040-21.90E.
   SIX MILE BERTH REQUESTED.
2. CANCEL THIS MSG 01 JAN 20.

Surveys·HYDROLANT 3551/192019-11-20 11:13Z → cancelled 2019-12-05 17:00Z

Survey operations 22 nov thru 31 dec by M/V polar empress, M/V andromeda and M/V mainport kells in area…

Black Sea · Turkey · Black Sea

BLACK SEA.
TURKEY.
DNC 10.
1. SURVEY OPERATIONS 22 NOV THRU 31 DEC BY
   M/V POLAR EMPRESS, M/V ANDROMEDA AND
   M/V MAINPORT KELLS IN AREA BOUND BY
   42-01.6N 028-30.4E, 41-49.9N 028-35.5E,
   42-00.5N 029-20.7E, 42-13.1N 029-15.3E.
   SIX MILE BERTH REQUESTED.
2. CANCEL THIS MSG 01 JAN 20.

Surveys·HYDROLANT 3554/192019-11-20 21:14Z → cancelled 2019-11-24 00:01Z

Survey operations in progress until 23 nov by M/V polar empress, M/V andromeda and M/V mainport kells in…

Black Sea · Turkey · Black Sea

BLACK SEA.
TURKEY.
DNC 10.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 23 NOV
   BY M/V POLAR EMPRESS, M/V ANDROMEDA AND
   M/V MAINPORT KELLS IN AREA BOUND BY
   43-18N 032-24E, 42-44N 031-31E,
   42-05N 030-18E, 42-12N 029-09E,
   42-04N 028-34E, 41-50N 028-40E,
   41-59N 030-23E, 43-08N 033-18E.
   SIX MILE BERTH REQUESTED.
2. CANCEL THIS MSG 24 NOV 19.

Surveys·HYDROLANT 3697/192019-12-02 19:57Z → cancelled 2019-12-06 00:01Z

Survey operations 03 thru 05 dec by M/V polar empress, M/V rig andromeda and M/V mainport kells in area…

Black Sea · Turkey · Black Sea

BLACK SEA.
TURKEY.
DNC 10.
1. SURVEY OPERATIONS 03 THRU 05 DEC
   BY M/V POLAR EMPRESS, M/V RIG ANDROMEDA AND
   M/V MAINPORT KELLS IN AREA BOUND BY
   43-18N 032-24E, 42-44N 031-31E,
   42-05N 030-18E, 42-12N 029-09E,
   42-04N 028-34E, 41-50N 028-40E,
   41-59N 030-23E, 43-08N 033-18E.
   SIX MILE BERTH REQUESTED.
2. CANCEL THIS MSG 06 DEC 19.

Not for navigation. The name is read automatically from official navigational warnings; a common name can belong to more than one ship, and a message may describe work the vessel is doing (cable, survey) rather than something that happened to it. Mariners must use official NAVAREA broadcasts and their national MSI service.