Survey operations 16 thru 31 may by M/V ltb 300, M/V ahts shakti, M/V maria 1 and M/V lanpan 27 along…
Arabian Sea · HYDROPAC 1608/23
What this record establishes
Archived notice · 2023-06-01 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) · NAVAREA VIII 481/23 151016Z MAY 23.. Issued 2023-05-15 12:40Z. 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
- Arabian 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
- F/V stcancelled by this notice
- issued
- 2023-05-15 12:40Z
- status
- Archived notice
- self-cancels
- 2023-06-01 00:01Z
- authority
- NAVAREA VIII 481/23 151016Z MAY 23.
- NAVAREA
- NAVAREA VIII · named as the source of this relay
- sea
- Arabian Sea
- position
- 18.573, 72.267
- vessels
- M/V LANPAN 27 · 4 messagesM/V LTB 300 · 19 messagesM/V MARIA 1 · 8 messagesM/V SHAKTI · 13 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ARABIAN SEA. INDIA. DNC 03. 1. SURVEY OPERATIONS 16 THRU 31 MAY BY M/V LTB 300, M/V AHTS SHAKTI, M/V MARIA 1 AND M/V LANPAN 27 ALONG TRACKLINE JOINING 18-34.98N 072-14.41E, 18-33.76N 072-17.63E. WIDE BERTH REQUESTED. 2. CANCEL HYDROPAC 1574/23. 3. CANCEL THIS MSG 010001Z JUN 23.
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.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Collected reports in this area · survey operations
593 within 180 nm since 2003 · 27 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 30 sep thru 13 nov by M/V oceanic sirius in area bound by 18-16.00N 071-45.00E, 18-30.00N…2026-09-29
- Survey operations in progress by kohinoor 1 until 12 oct, and M/V fugro mapper until 15 oct in areas bounded…2026-09-22
- Survey operations 17 sep thru 15 oct by M/V fugro mapper in areas bound by: a. 20-22.00N 071-18.00E,…2026-09-16
- Survey operations 11 sep thru 26 oct by M/V vanessa 6 in area bound by 19-30.97N 071-21.32E, 19-35.32N…2026-09-10
- Survey operations 15 jul thru 14 aug by M/V trimurti in area bound by 19-07.08N 072-48.20E, 19-05.68N…2026-07-15
- Survey operations 01 thru 30 apr by M/V vanessa 7 in area bound by 19-23.19N 071-17.41E, 19-23.60N…2026-03-30
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
- 6.2 meter depths reported in vicinity: a. 18-17.72N 072-55.18EWrecks · 41 nm
- Derelict M/V al jafzia aground in 19-11.50N 072-46.40EDerelicts · 47 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 13:46Z; 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.