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.
Vessel
Tembaga 4
MMSI 525015056
Not yet on Master's MateFlag
IDNLength
32 m
IMO
9175559
AIS reports
2
Tembaga 4, an Indonesian boat, measures 32 metres on deck. She's on record as MMSI 525015056, IMO 9175559. Tembaga 4 belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
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Is Tembaga 4 your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
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Wherever Tembaga 4 roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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Joining the Safety Initiative Network doesn't just put Tembaga 4 on the map. It hands you the full bridge:
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.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Tembaga 4 and switch it all on
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About Tembaga 4
What kind of vessel is Tembaga 4?
Tembaga 4 is a vessel flagged to Indonesia.
What is Tembaga 4's MMSI?
Tembaga 4's MMSI is 525015056. IMO 9175559.
How big is Tembaga 4?
Tembaga 4 is about 32 m long.
Is Tembaga 4 on the Master's Mate Safety Initiative Network?
Not yet. If Tembaga 4 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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