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

S/R CALIFORNIA

MMSI 366445010 · Call sign WUZ8345

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

42.1 m

Beam

12.2 m

Draft

4.2 m

Call sign

WUZ8345

IMO

7417288

Official No.

566464

AIS reports

S/R CALIFORNIA, an American service vessel, measures 42.1 metres on deck. She carries a 12.2 m beam and a 4.2 m draft. She's on record as MMSI 366445010, call sign WUZ8345, IMO 7417288. S/R CALIFORNIA belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.

Free forever · No credit card · for working boats

Built for boats that work — like S/R CALIFORNIA.

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

Wherever S/R CALIFORNIA 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 S/R CALIFORNIA 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 S/R CALIFORNIA and switch it all on

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About S/R CALIFORNIA

What kind of vessel is S/R CALIFORNIA?

S/R CALIFORNIA is a Towing Vessel flagged to United States of America.

What is S/R CALIFORNIA's MMSI?

S/R CALIFORNIA's MMSI is 366445010. Call sign WUZ8345. IMO 7417288.

How big is S/R CALIFORNIA?

S/R CALIFORNIA is about 42.1 m long, 12.2 m on the beam, drawing 4.2 m.

Is S/R CALIFORNIA on the Master's Mate Safety Initiative Network?

Not yet. If S/R CALIFORNIA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).