SUMIMARU NO.3

Particulars

MMSI	431501772
Call sign	JL6646
Flag	Japan
Vessel type	Tug
Length overall	35 m
Beam	10 m

From her own AIS broadcasts.

Her MMSI

431501772

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	5 m (A)
To the stern	30 m (B)
To the port side	7 m (C)
To the starboard side	3 m (D)
Heard from	AISStream
On the map since	31 Oct 2026, 10:40 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

MIDORIKAWA Cargo ship1.3 nm
NURI HANA Tanker1.8 nm
TAIWA MARU Tanker1.8 nm
YUUSEIMARU NO3 Cargo ship2.0 nm
SHIMANAMI Cargo ship2.7 nm
KEISHIN MARU NO.11 Tanker2.8 nm
TOKUSHIN MARU Cargo ship3.5 nm
YACHIYO MARU NO.5 Tanker3.5 nm

Where she is

Position	33.5923° N, 136.0394° E
Speed	10.5 knots
Course	224°
Local time

Voyage

To: Not reported
ETA: Not reported