SANNOU

Particulars

MMSI	431011667
IMO number	9843986
Call sign	JD4431
Flag	Japan
Vessel type	Cargo ship
Length overall	60 m
Beam	10 m

From her own AIS broadcasts.

Her MMSI

431011667

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.

Her IMO number, 9843986, stays with the hull for life.

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 under engine power
To the bow	52 m (A)
To the stern	8 m (B)
To the port side	8 m (C)
To the starboard side	2 m (D)
Destination as typed	JP THS OFFWhat the crew entered; the Voyage card turns it into a port.
Heard from	AISStream
On the map since	31 Oct 2026, 20:43 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

JINSHOMARU NO.21 Fishing vessel2.3 nm
KOUFUKU MARU Towing vessel2.5 nm
SHINSHINMARU Tanker3.6 nm
TADAMARU Fishing vessel5.9 nm
OOZU MARU NO.10 Tanker7.0 nm
GRAND SAILING Cargo ship7.6 nm
SUMISEMARU NO.5 Cargo ship7.6 nm
SEISHIN MARU Cargo ship7.6 nm

Where she is

Position	33.7760° N, 136.1887° E
Speed	11.4 knots
Course	32°
Local time

Voyage

To: Toyohashi, JapanAbout 84 nm away in a straight line
ETA: 1 Nov 17:30 UTC