YASAKA

Particulars

MMSI	431400479
Call sign	JK5417
Flag	Japan
Vessel type	Cargo ship
Length overall	55 m
Beam	10 m

From her own AIS broadcasts.

Her MMSI

431400479

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	40 m (A)
To the stern	15 m (B)
To the port side	5 m (C)
To the starboard side	5 m (D)
Heard from	AISStream
On the map since	31 Oct 2026, 02:30 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

SHINSEI MARU Cargo ship2.1 nm
KEIUN MARU Cargo ship2.4 nm
KOUSHOU MARU5.0 nm
KOYO MARU Cargo ship5.2 nm
SEISEN MARU Cargo ship5.2 nm
TETSURYUMARU Cargo ship5.3 nm
KANNON MARU Cargo ship5.3 nm
ISARA BHUM Cargo ship5.4 nm

Where she is

Position	34.0162° N, 133.1117° E
Speed	10.8 knots
Course	160°
Local time

Voyage

To: Not reported
ETA: Not reported