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
ISOPRENE MARU N0.3
Japan · last seen 36°N 140°E · Jun 2026 · MMSI 431002607
Not yet on Master's MateFlag
JPNLength
73 m
IMO
9552654
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
9
ISOPRENE MARU N0.3 is a vessel flagged in Japan, measuring 73 metres. She's listed under MMSI 431002607, IMO 9552654. The Master's Mate Safety Initiative Network welcomes ISOPRENE MARU N0.3 — free to join, cruiser-run, and always on watch.
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Is ISOPRENE MARU N0.3 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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Live AIS position · Jun 16, 2026 00:24 UTC
Position
35.6059° N, 139.8802° E
Status
Under way (engine)
Speed
0.3 kn
Course
281°
Crossing the Sea of Japan? 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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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put ISOPRENE MARU N0.3 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 ISOPRENE MARU N0.3 and switch it all on
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About ISOPRENE MARU N0.3
What kind of vessel is ISOPRENE MARU N0.3?
ISOPRENE MARU N0.3 is a vessel flagged to Japan.
Where was ISOPRENE MARU N0.3 last seen?
ISOPRENE MARU N0.3 was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is ISOPRENE MARU N0.3's MMSI?
ISOPRENE MARU N0.3's MMSI is 431002607. IMO 9552654.
How big is ISOPRENE MARU N0.3?
ISOPRENE MARU N0.3 is about 73 m long.
Is ISOPRENE MARU N0.3 on the Master's Mate Safety Initiative Network?
Not yet. If ISOPRENE MARU N0.3 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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