Survey operations are underway in the Bay of Bengal, India, from September 10 to October 21, requesting a two-mile berth.
Bay of Bengal · HYDROPAC 2600/26
What this record establishes
Cancelled notice · 2026-09-09 13:15Z
This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.
- Source and dates
- NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-09-09 10:32Z. First collected 2026-09-09 18:17Z; last seen in collection 2026-09-27 08:17Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- Bay of Bengal. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Current notices and reporting history in the Bay of Bengal →
- issued
- 2026-09-09 10:32Z
- status
- Cancelled notice
- self-cancels
- 2026-10-22 00:01Z
- sea
- Bay of Bengal
- position
- 16.379, 82.354
- vessel
- M/V LAY · 7 messages
- source
- NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-09 18:17Z
Original warning text
BAY OF BENGAL. INDIA. 1. SURVEY OPERATIONS 10 SEP THRU 21 OCT BY M/V LAY VESSEL 108 IN AREA BOUND BY 16-31.55N 082-18.71E, 16-31.52N 082-23.20E, 16-17.93N 082-23.10E, 16-17.92N 082-26.12E, 16-15.24N 082-26.10E, 16-15.29N 082-18.60E. TWO MILE BERTH REQUESTED. 2. CANCEL THIS MSG 220001Z OCT 26.
Reading this warning
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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.
- 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
147 within 180 nm since 2004 · 4 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 20 dec thru 18 jan 26 by M/V oceanic sirius and M/V sw bly in area bound by 16-54.00N…2025-12-16
- Survey operations 30 nov to 30 dec by M/V sambhavya in area bound by 16-15.94N 081-16.99E, 16-13.50N…2025-11-29
- Survey operations 29 nov thru 28 dec by M/V sw bly in area bound by 16-54.00N 084-37.00E, 16-47.00N…2025-11-28
- Survey operations in progress until 15 mar by M/V coastal triumph in area bound by 16-36.83N 082-24.50E,…2025-02-03
- Survey operations in progress until 19 feb 25 by M/V mahaxmi II in vicinity of trackline joining 16-32.04N…2024-12-03
- Survey operations 15 thru 28 nov in area bound by 15-03.00N 080-02.00E, 15-03.00N 081-26.00E, 15-45.50N…2024-11-13
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 2026-09-27 08:31Z; 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.