Surveys

Underwater operations by M/V rebecca in vicinity of trackline joining: a. in progress until 27 dec 36-17.61N…

Alboran Sea · HYDROLANT 3936/19

What this record establishes

Archived notice · 2019-12-28 08:18Z

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 III 1481/19 231032Z DEC 19.. Issued 2019-12-23 12:10Z. 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
Alboran 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

Current notices and reporting history in the Alboran Sea →

issued
2019-12-23 12:10Z
status
Archived notice
authority
NAVAREA III 1481/19 231032Z DEC 19.
NAVAREA
NAVAREA III · named as the source of this relay
sea
Alboran Sea
position
36.213, -3.670
vessel
M/V REBECCA · 100 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

ALBORAN SEA.
SPAIN.
DNC 08.
1. UNDERWATER OPERATIONS BY M/V REBECCA
   IN VICINITY OF TRACKLINE JOINING:
   A. IN PROGRESS UNTIL 27 DEC
      36-17.61N 003-41.79W, 36-17.52N 003-47.08W,
      36-17.61N 003-41.79W, 36-16.12N 002-43.55W.
   B. 28 THRU 31 DEC
      36-10.66N 004-12.79W, 36-08.32N 004-17.29W,
      36-10.66N 004-12.79W, 36-14.36N 004-00.79W.
   C. 31 DEC THRU 02 JAN 20
      35-51.14N 005-00.85W, 35-51.14N 004-49.22W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 03 JAN 20.

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.
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.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · survey operations

80 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
23

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.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

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 07:14Z; 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.