Survey operations 02 thru 22 jul by M/V marion in area bound by 12-15S 044-40E, 13-20S 044-40E, 13-20S…
Mozambique Channel · HYDROPAC 1933/21
What this record establishes
Archived notice · 2021-07-23 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 VII 205/21 012002Z JUL 21.. Issued 2021-07-01 20:36Z. 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
- Mozambique Channel. 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 Mozambique Channel →
- issued
- 2021-07-01 20:36Z
- status
- Archived notice
- authority
- NAVAREA VII 205/21 012002Z JUL 21.
- NAVAREA
- NAVAREA VII · named as the source of this relay
- sea
- Mozambique Channel
- position
- -12.792, 45.500
- vessel
- M/V MARION
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
MOZAMBIQUE CHANNEL. COMOROS (MAYOTTE). DNC 02. 1. SURVEY OPERATIONS 02 THRU 22 JUL BY M/V MARION IN AREA BOUND BY 12-15S 044-40E, 13-20S 044-40E, 13-20S 046-20E, 12-15S 046-20E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 23 JUL 21.
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.
- 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.
Collected reports in this area · survey operations
23 within 180 nm since 2008 · 1 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 24 sep thru 04 oct by M/V marion dufresne in area bound by 12-30.00S 045-17.00E, 13-18.00S…2026-09-23
- Survey operations 20 sep thru 07 oct by M/V fnin in area bound by 12-30.00S 045-17.00E, 13-18.00S…2024-09-20
- Survey operations in progress until 25 sep by M/V marion dufresne in area bound by 12-35.00S 046-10.00E,…2023-09-14
- Survey operation in progress until 24 jul by M/V marion dufrense in area bound by 13-14.00S 045-10.00E,…2022-07-11
- Survey operations in progress until 01 oct by r/v marion dufresne in area bound by 12-24.0S 045-10.0E,…2021-09-23
- Survey operations in progress until 04 jun by M/V pourquoi pas in area bound by 12-24S 045-10E, 12-24S…2021-05-25
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
50 survey operations listed in force · see all
Record snapshot 2026-09-25 03:49Z; 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.