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
ANTONIOS M
MMSI 237026700 · Call sign SV5304
Not yet on Master's MateType
Passenger
Flag
GRCLength
56 m
Beam
16 m
Draft
1.8 m
Call sign
SV5304
IMO
8652861
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
48
On the Greek registry, ANTONIOS M is a 56-metre passenger ship. Below, she has a beam measuring 16 metres and a draft measuring 1.8 metres. On the registers she's MMSI 237026700, call sign SV5304, IMO 8652861. Join ANTONIOS M to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard ANTONIOS M 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
38.3334° N, 21.7695° E
Sailing the Ionian Sea? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put ANTONIOS M 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 ANTONIOS M and switch it all on
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About ANTONIOS M
What kind of vessel is ANTONIOS M?
ANTONIOS M is a Passenger flagged to Greece.
Where was ANTONIOS M last seen?
ANTONIOS M was last reported in the Ionian Sea in Jun 2026 on public AIS.
What is ANTONIOS M's MMSI?
ANTONIOS M's MMSI is 237026700. Call sign SV5304. IMO 8652861.
How big is ANTONIOS M?
ANTONIOS M is about 56 m long, 16 m on the beam, drawing 1.8 m.
Is ANTONIOS M on the Master's Mate Safety Initiative Network?
Not yet. If ANTONIOS M is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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