KOUSHIN MARU NO15

Particulars

MMSI	431021149
Call sign	JD5231
Flag	Japan
Vessel type	Cargo ship
Length overall	77 m
Beam	12 m
Draught	4.8 m

From her own AIS broadcasts.

Her MMSI

431021149

The first three digits, 431, are the country code of Japan: 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	Moored
To the bow	63 m (A)
To the stern	14 m (B)
To the port side	4 m (C)
To the starboard side	8 m (D)
Destination as typed	JP FNB OFFWhat the crew entered; the Voyage card turns it into a port.
Heard from	AISStream
On the map since	31 Oct 2026, 09:48 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

NO2KAKUSUI MARU Tanker2.3 nm
YAMABISHI MARU NO.11 Tanker3.3 nm
SHINKOMARU NO11 Cargo ship3.9 nm
SUIKOU Cargo ship4.4 nm
TOWA MARU Tanker5.1 nm
MILD TUNE Cargo ship5.3 nm
ZUIRYU MARU Cargo ship5.9 nm
SUMIYO Cargo ship6.5 nm

Where she is

Position	33.9735° N, 136.5534° E
Speed	12.2 knots
Course	66°
Local time

Voyage

To: Funabashi, JapanAbout 198 nm away in a straight line
ETA: 1 Nov 15:30 UTC