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 Joaquin River
MMSI 367004670 · Call sign WDC3248
Not yet on Master's MateType
Towing Vessel
Flag
USALength
19.6 m
Beam
8 m
Draft
2.4 m
Call sign
WDC3248
IMO
8842454
Official No.
295630
AIS reports
1
San Joaquin River, a work boat sailing under the American flag, measures 19.6 metres on deck. She has a 8 m beam and a draft measuring 2.4 metres. On the registers she's MMSI 367004670, call sign WDC3248, IMO 8842454. The Master's Mate Safety Initiative Network welcomes San Joaquin River — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for working boats
Built for boats that work — like San Joaquin River.
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
Live AIS position · Jun 9, 2026 20:49 UTC
Position
37.7907° N, 122.2912° W
Status
Moored
Speed
0.0 kn
Course
221°
Destination
SFODB
Working San Francisco Bay? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put San Joaquin River 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 Joaquin River and switch it all on
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About San Joaquin River
What kind of vessel is San Joaquin River?
San Joaquin River is a Towing Vessel flagged to United States of America.
Where was San Joaquin River last seen?
San Joaquin River was last reported in San Francisco Bay on public AIS.
What is San Joaquin River's MMSI?
San Joaquin River's MMSI is 367004670. Call sign WDC3248. IMO 8842454.
How big is San Joaquin River?
San Joaquin River is about 19.6 m long, 8 m on the beam, drawing 2.4 m.
Is San Joaquin River on the Master's Mate Safety Initiative Network?
Not yet. If San Joaquin River is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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