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.
Tanker
NAVE CASSIOPEIA
MMSI 636015776 · Call sign D5CT4
Not yet on Master's MateType
Tanker
Flag
LBRLength
228 m
Beam
32 m
Draft
12 m
Call sign
D5CT4
IMO
9589932
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
27
On the Liberian registry, NAVE CASSIOPEIA is a 228-metre tank ship. She's built with a beam of 32 m and a 12-metre draft. Look for MMSI 636015776, call sign D5CT4, IMO 9589932. Bring NAVE CASSIOPEIA aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for commercial operators
Eyes on NAVE CASSIOPEIA, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 3, 2026
Position
34.5919° N, 129.1004° E
Transiting 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 NAVE CASSIOPEIA on the map. It hands you the full bridge:
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
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 NAVE CASSIOPEIA and switch it all on
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About NAVE CASSIOPEIA
What kind of vessel is NAVE CASSIOPEIA?
NAVE CASSIOPEIA is a Tanker flagged to Liberia.
Where was NAVE CASSIOPEIA last seen?
NAVE CASSIOPEIA was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is NAVE CASSIOPEIA's MMSI?
NAVE CASSIOPEIA's MMSI is 636015776. Call sign D5CT4. IMO 9589932.
How big is NAVE CASSIOPEIA?
NAVE CASSIOPEIA is about 228 m long, 32 m on the beam, drawing 12 m.
Is NAVE CASSIOPEIA on the Master's Mate Safety Initiative Network?
Not yet. If NAVE CASSIOPEIA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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