Other

90 meter long, partially submerged, streamer adrift in 23-17.33S 056-04.51E

Indian Ocean · HYDROPAC 1833/23

What this record establishes

Archived notice · 2023-06-04 12:34Z

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) · AVURNAV LA REUNION 24/23 011213Z JUN 23.. Issued 2023-06-01 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
Indian Ocean. The parsed report position is -23.289, 56.075. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the Indian Ocean →

issued
2023-06-01 12:40Z
status
Archived notice
self-cancels
2023-06-04 12:34Z
authority
AVURNAV LA REUNION 24/23 011213Z JUN 23.
issued by
AVURNAV LA REUNION
sea
Indian Ocean
position
-23.289, 56.075
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN INDIAN OCEAN.
DNC 02.
1. 90 METER LONG, PARTIALLY SUBMERGED,
   STREAMER ADRIFT IN 23-17.33S 056-04.51E.
2. CANCEL THIS MSG 041234Z 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.
Semi-submerged
Floating at or just below the surface, so hard to see by eye or radar.
Towed array / streamer
Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
Adrift
Loose and moving with wind and current — a vessel, container, buoy, log or anything else no longer secured.
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.
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.

All warning terms →

Collected reports in this area · other warnings

11 within 180 nm since 2014 · 0 in the last 12 months · 1 listed in force now

14
15
20
24

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

20 other warnings listed in force · see all

Record snapshot 2026-09-24 18:28Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.