Ship-name archive · official navigational warnings

MDS Ariadne

2 public warnings use this name, 2026-09-20. The notices cover South Atlantic Ocean. Compare what each source reports, how its wording changes, and which identifiers are actually attached to the name.

These are mentions of a name. They can describe vessel operations, hazards or different ships using the same name.

What the reports establish

No displayed warning is recorded as in force. 2 have been cancelled. Cancellation concerns the notice; it does not establish the vessel’s current condition or a successful recovery.

First dated report in this archive

Issued 2026-09-20 12:39Z

Underwater operations 0800Z to 1800Z daily 21 sep thru 05 oct by M/V mds ariadne and M/V comando b in…

Surveys · South Atlantic · Brazil

HYDROLANT 1865/26

Latest dated report in this archive

Issued 2026-09-20 12:43Z

Underwater operations 0800Z to 1800Z daily 21 sep thru 05 oct by M/V mds ariadne and M/V comando b in…

Surveys · South Atlantic · Brazil

HYDROLANT 1866/26

Which vessel does this name identify?

No IMO or MMSI can be confidently attached to this name from the displayed warnings. A matching name alone cannot establish that these reports concern the same vessel.

Name styles in these reports: M/V. Interpreted vessel types: merchant vessel.

Warning record and geographic coverage

Dated report span: 0 days
Warning days covered: 3.1 days
Separate warning periods: 1
Warnings with a map location: 2 / 2

Warning days combine recorded issue-to-cancellation periods, counting overlapping days once. In-force notices extend to the calculation time. These periods describe the warning record, not days at sea or the duration of a vessel incident.

South Atlantic Ocean warning history

What changed between reports

Compare adjacent dated warnings. Changes can describe a new operation or a different vessel with the same name. Distances compare warning map centers; they do not measure vessel travel. Source statements retain their wording, with numbering and spacing normalized.

2026-09-20Same report details in the compared fields

HYDROLANT 1865/26 HYDROLANT 1866/26 · 0 days between issue dates

Warning type: Surveys (unchanged)
Area: South Atlantic · Brazil · South Atlantic Ocean (unchanged)
Map centers: 0 nautical miles apart

1 substantive statement is repeated. A wording omission does not establish that an operation or hazard ended.

Map center of HYDROLANT 1866/26, issued 2026-09-20 12:43Z: -20.398, -40.157. The center may represent an operation area, route or hazard. It is not a confirmed vessel position. Issue time is the warning publication time; any observation time must be read in the original message.

Source warnings · 2

Oldest dated warning first; undated messages follow. Open each entry to read its complete original text.

1
SurveysHYDROLANT 1865/26Issued 2026-09-20 12:39Z
Underwater operations 0800Z to 1800Z daily 21 sep thru 05 oct by M/V mds ariadne and M/V comando b in…
South Atlantic · Brazil · South Atlantic Ocean
Warning cancelled 2026-09-23 14:45Z (dropped from inforce)
Read original warning
```
SOUTH ATLANTIC.
BRAZIL.
1. UNDERWATER OPERATIONS 0800Z TO 1800Z
   DAILY 21 SEP THRU 05 OCT BY
   M/V MDS ARIADNE AND M/V COMANDO B
   IN 20-23.88S 040-09.40W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 051900Z OCT 26.
```
2
SurveysHYDROLANT 1866/26Issued 2026-09-20 12:43Z
Underwater operations 0800Z to 1800Z daily 21 sep thru 05 oct by M/V mds ariadne and M/V comando b in…
South Atlantic · Brazil · South Atlantic Ocean
Warning cancelled 2026-09-23 14:45Z (dropped from inforce)
Read original warning
```
SOUTH ATLANTIC.
BRAZIL.
1. UNDERWATER OPERATIONS
   0800Z TO 1800Z DAILY
   21 SEP THRU 05 OCT
   BY M/V MDS ARIADNE AND M/V COMANDO B
   IN 20-23.88S 040-09.40W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 051900Z OCT 26.
```

Not for navigation. Names and identifiers are extracted automatically from the cited warnings. This archive does not verify current vessel position, seaworthiness or incident resolution. Mariners must use official NAVAREA broadcasts and their national MSI service.