THE BIG TUG THEORY

Particulars

MMSI	338075101
Call sign	BIG TUG
Flag	United States
Vessel type	Pleasure craft
Length overall	13 m
Beam	5 m

From her own AIS broadcasts.

Her MMSI

338075101

The first three digits, 338, are the country code of the United States: 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	6 m (A)
To the stern	7 m (B)
To the port side	1 m (C)
To the starboard side	4 m (D)
Heard from	AISStream
On the map since	22 Oct 2026, 01:29 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

SCOUT Sailing vessel0.6 nm
ANGELFISH Sailing vessel0.7 nm
FERGIE'S FORTUNE III Pleasure craft1.0 nm
VITAMIN SEA 2 Pleasure craft1.4 nm
SOLSTICE Pleasure craft1.5 nm
REAL-TIME Pleasure craft1.5 nm
BEVERLEY Pleasure craft1.5 nm
SHADOWFAX Sailing vessel1.5 nm

Where she is

Position	38.8788° N, 76.5126° W
Local time

Voyage

To: Not reported
ETA: Not reported