CASSIOPEE

Particulars

MMSI	205843500
Call sign	OS8435
Flag	Belgium
Vessel type	Sailing vessel
Length overall	10 m
Beam	3 m

From her own AIS broadcasts.

Her MMSI

205843500

The first three digits, 205, are the country code of Belgium: 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 BWorked out, not reported: only Class A transponders send a status, and she sends none. Class B is the lighter kind on yachts, fishing boats and other small craft, which reports less often.
To the bow	10 m (A)
To the stern	0 m (B)
To the port side	2 m (C)
To the starboard side	1 m (D)
Heard from	AISStream
On the map since	31 Oct 2026, 06:27 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

MANCALA Pleasure craft1.3 nm
MAESLANT Law enforcement vessel1.6 nm
RV2108 Military vessel1.6 nm
P41 Law enforcement vessel1.6 nm
BOBATO Pleasure craft1.6 nm
SCOOPER II Pleasure craft1.6 nm
STORMVOGEL Pleasure craft1.6 nm
CUAC 2 Pleasure craft1.6 nm

Where she is

Position	51.3845° N, 3.3400° E
Speed	6.0 knots
Course	269°
Local time

Voyage

From: Vlissingen, NetherlandsDeparted 31 Oct 2026 (inferred)
To: Not reported
ETA: Not reported