TB.SEAMASTER 301

Particulars

MMSI	525601981
Call sign	YD5354
Flag	Indonesia
Vessel type	Tug
Length overall	28 m
Beam	8 m

From her own AIS broadcasts.

Her MMSI

525601981

The first three digits, 525, are the country code of Indonesia: 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	28 m (A)
To the stern	0 m (B)
To the port side	4 m (C)
To the starboard side	4 m (D)
Heard from	AISStream
On the map since	31 Oct 2026, 02:25 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

FANNY 26 Tugunder 0.1 nm
KM PEKAN BERAU Cargo ship0.1 nm
PETRO OCEAN III Tanker0.1 nm
MV TANTO SUBUR II Cargo ship0.1 nm
KT SUBALI 2 Tug0.1 nm
TB SEMAR 83 Tug0.1 nm
KTBIMA 333 Tug0.1 nm
MERATUS KAPUAS Cargo ship0.1 nm

Where she is

Position	7.2075° S, 112.7250° E
Speed	Stopped, 0.0 knots
Local time

Voyage

From: Surabaya, IndonesiaStopped here now
To: Not reported
ETA: Not reported