SHINKOUMARU NO.55

Particulars

MMSI	431501882
Call sign	JD2353
Flag	Japan
Vessel type	Cargo ship
Length overall	73 m
Beam	12 m

From her own AIS broadcasts.

Her MMSI

431501882

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 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	63 m (A)
To the stern	10 m (B)
To the port side	5 m (C)
To the starboard side	7 m (D)
Heard from	AISStream
On the map since	31 Oct 2026, 11:08 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

MATSUBISHI MARU Tanker1.6 nm
HOSEI MARU NO.3 Tanker2.2 nm
CRANE LUNA Tanker3.1 nm
JFE N6 DAIFUKU MARU Cargo ship3.2 nm
HOUSEIMARU NO.7 Tanker3.4 nm
SANEI MARU Cargo ship4.2 nm
SEIKEN MARU Cargo ship4.3 nm
NOJIGIKU Tanker4.5 nm

Where she is

Position	33.7058° N, 136.3372° E
Speed	10.5 knots
Course	57°
Local time

Voyage

From: Chiba, JapanDeparted 11 Oct 2026 (inferred)
To: Not reported
ETA: Not reported