Surveys
Underwater operations in progress until 301830Z apr by M/V gal installer and M/V aht albatross in area…
Arabian Sea · India · HYDROPAC 904/17
What this record establishes
Archived notice · 2017-04-07 12:33Z
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 217/17 161002Z MAR 17.. Issued 2017-03-16 13:12Z. 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 · India. No usable coordinates were parsed; a location-based nearby search is unavailable. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROPAC 236/17, 735/17, 904/17, 929/17, 1013/17, 1223/17 and this msglater cancellation notice
- issued
- 2017-03-16 13:12Z
- status
- Archived notice
- self-cancels
- 2017-04-30 19:30Z
- authority
- NAVAREA VIII 217/17 161002Z MAR 17.
- NAVAREA
- NAVAREA VIII · named as the source of this relay
- vessels
- M/V ALBATROSS · 8 messagesM/V GAL INSTALLER · 3 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. UNDERWATER OPERATIONS IN PROGRESS UNTIL 301830Z APR BY M/V GAL INSTALLER AND M/V AHT ALBATROSS IN AREA BETWEEN 18-38.4N 18-40.2N AND 072-12E 072-13.8E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 301930Z APR 17.
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.
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- 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.
- 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.
Nearby notices listed in force · within 120 nm
No parsed position is available for this comparison.
Worldwide in the collected sources
55 survey operations listed in force · see all
Record snapshot 2026-10-02 01:57Z; 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.