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
SYMPHONY CLASSICA
MMSI 431000425 · Call sign JG4838
Not yet on Master's MateType
Passenger
Flag
JPNLength
70 m
Beam
10 m
Draft
3 m
Call sign
JG4838
IMO
8814005
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
37
SYMPHONY CLASSICA is a Japanese 70-metre passenger craft. She has a 10 m beam and a draft measuring 3 metres. Officially she's MMSI 431000425, call sign JG4838, IMO 8814005. SYMPHONY CLASSICA is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard SYMPHONY CLASSICA 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 4, 2026
Position
35.6010° N, 139.7745° 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.
Free with your claim · for passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SYMPHONY CLASSICA 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 SYMPHONY CLASSICA and switch it all on
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About SYMPHONY CLASSICA
What kind of vessel is SYMPHONY CLASSICA?
SYMPHONY CLASSICA is a Passenger flagged to Japan.
Where was SYMPHONY CLASSICA last seen?
SYMPHONY CLASSICA was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is SYMPHONY CLASSICA's MMSI?
SYMPHONY CLASSICA's MMSI is 431000425. Call sign JG4838. IMO 8814005.
How big is SYMPHONY CLASSICA?
SYMPHONY CLASSICA is about 70 m long, 10 m on the beam, drawing 3 m.
Is SYMPHONY CLASSICA on the Master's Mate Safety Initiative Network?
Not yet. If SYMPHONY CLASSICA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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