Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Tug
TB LL IRAWAN
MMSI 525301507 · Call sign YDC4389
Not yet on Master's MateType
Tug
Flag
IDNLength
23 m
Beam
8 m
Draft
3 m
Call sign
YDC4389
IMO
9954771
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
An Indonesian harbour tug, TB LL IRAWAN measures 23 metres. She has a 8 m beam and a draft of 3 m. Her registration reads MMSI 525301507, call sign YDC4389, IMO 9954771. TB LL IRAWAN is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for working boats
Built for boats that work — like TB LL IRAWAN.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
6.0643° S, 106.8884° E
Wherever TB LL IRAWAN roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim · for working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put TB LL IRAWAN on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim TB LL IRAWAN and switch it all on
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About TB LL IRAWAN
What kind of vessel is TB LL IRAWAN?
TB LL IRAWAN is a Tug flagged to Indonesia.
Where was TB LL IRAWAN last seen?
TB LL IRAWAN was last reported in around 6°S 107°E in Jun 2026 on public AIS.
What is TB LL IRAWAN's MMSI?
TB LL IRAWAN's MMSI is 525301507. Call sign YDC4389. IMO 9954771.
How big is TB LL IRAWAN?
TB LL IRAWAN is about 23 m long, 8 m on the beam, drawing 3 m.
Is TB LL IRAWAN on the Master's Mate Safety Initiative Network?
Not yet. If TB LL IRAWAN is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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