FOSNA POSEIDON

Particulars

MMSI	257031990
Call sign	LH2423
Flag	Norway
Vessel type	Diving support
Length overall	15 m
Beam	5 m
Draught	2 m

From her own AIS broadcasts.

Her MMSI

257031990

The first three digits, 257, are the country code of Norway: an MMSI follows a ship's flag, so a new flag brings a new number.

She broadcasts no IMO number. Only larger seagoing ships are required to have one.

Her AIS details

AIS is the radio signal a ship sends so that other ships can see her. This is what her signal tells us.

Seen from above, bow to the right, so port is the upper side. The ring is her GPS aerial, where her crew or installer said it sits. Shiptrail draws the aerial's position, not the middle of the ship.

AIS class	Class AWorked out, not reported: only Class A transponders send a status, and she sends one. Class A is the full-strength kind that large cargo and passenger ships must carry.
Status she reports	Under way sailing
To the bow	11 m (A)
To the stern	4 m (B)
To the port side	2 m (C)
To the starboard side	3 m (D)
Destination as typed	CH16What the crew entered; the Voyage card turns it into a port.
Heard from	BarentsWatch
On the map since	1 Oct 2026, 16:16 UTC

A, B, C and D are AIS's own names for these four distances.

From her own AIS broadcasts as the feed delivers them.

Ships near her

FOSNA PONTOS Diving support vesselunder 0.1 nm
FOSNA GARM0.1 nm
MARCUS0.1 nm
HAVMANN Fishing vessel0.1 nm
HALTBAKK DISRUPTOR Tanker0.1 nm
HALTBAKK BERGEN Cargo ship0.2 nm
STORDAL Passenger ship0.3 nm
NEPTUN Cargo ship0.5 nm

Where she is

Position	63.1153° N, 7.7565° E
Speed	Stopped, 0.0 knots
Local time

Voyage

From: Kristiansund, NorwayStopped here now
To: CH16As broadcast
ETA: Not reported