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.
Passenger
FERRY RITSURIN
MMSI 431008355 · Call sign JD4041
Not yet on Master's MateType
Passenger
Flag
JPNLength
191 m
Beam
27 m
Draft
6.8 m
Call sign
JD4041
IMO
9815068
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
84
FERRY RITSURIN, a ferry flying the flag of Japan, measures 191 metres on deck. She carries a beam of 27 m and a 6.8-metre draft. Find her under MMSI 431008355, call sign JD4041, IMO 9815068. Put FERRY RITSURIN on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard FERRY RITSURIN safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 3, 2026
Position
35.6198° N, 139.8053° E
Sailing 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 FERRY RITSURIN on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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.
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.
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 FERRY RITSURIN and switch it all on
Free to join · nothing to install to start · cancel anytime
About FERRY RITSURIN
What kind of vessel is FERRY RITSURIN?
FERRY RITSURIN is a Passenger flagged to Japan.
Where was FERRY RITSURIN last seen?
FERRY RITSURIN was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is FERRY RITSURIN's MMSI?
FERRY RITSURIN's MMSI is 431008355. Call sign JD4041. IMO 9815068.
How big is FERRY RITSURIN?
FERRY RITSURIN is about 191 m long, 27 m on the beam, drawing 6.8 m.
Is FERRY RITSURIN on the Master's Mate Safety Initiative Network?
Not yet. If FERRY RITSURIN is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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