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.
Towing Vessel
SAN ANTONIO
MMSI 367507730 · Call sign WDF9683
Not yet on Master's MateType
Towing Vessel
Flag
USALength
208 m
Beam
18 m
Draft
3 m
Call sign
WDF9683
Official No.
1236027
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
84
An American utility vessel, SAN ANTONIO measures 208 metres. SAN ANTONIO has a 18 m beam and a 3-metre draft. Her papers read MMSI 367507730, call sign WDF9683. Sign SAN ANTONIO up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for working boats
Built for boats that work — like SAN ANTONIO.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 3, 2026
Position
34.8415° N, 87.9349° W
Wherever SAN ANTONIO roams, 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SAN ANTONIO on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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 SAN ANTONIO and switch it all on
Free to join · nothing to install to start · cancel anytime
About SAN ANTONIO
What kind of vessel is SAN ANTONIO?
SAN ANTONIO is a Towing Vessel flagged to United States of America.
Where was SAN ANTONIO last seen?
SAN ANTONIO was last reported in around 35°N 88°W in Jun 2026 on public AIS.
What is SAN ANTONIO's MMSI?
SAN ANTONIO's MMSI is 367507730. Call sign WDF9683.
How big is SAN ANTONIO?
SAN ANTONIO is about 208 m long, 18 m on the beam, drawing 3 m.
Is SAN ANTONIO on the Master's Mate Safety Initiative Network?
Not yet. If SAN ANTONIO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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