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.
Pilot
P/V CALIFORNIA
MMSI 366808340 · Call sign WDA4337
Not yet on Master's MateType
Pilot
Flag
USALength
32 m
Beam
9 m
Draft
4 m
Call sign
WDA4337
IMO
366808340
Official No.
1108655
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
On the American registry, P/V CALIFORNIA is a 32-metre service vessel. P/V CALIFORNIA has a 9 m beam and a 4 m draft. She's listed under MMSI 366808340, call sign WDA4337. P/V CALIFORNIA can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card · for working boats
Built for boats that work — like P/V 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
Live AIS position · Jun 9, 2026 18:25 UTC
Position
37.8009° N, 122.3958° W
Status
Moored
Speed
0.1 kn
Course
245°
Working San Francisco Bay? 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 P/V 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 P/V CALIFORNIA and switch it all on
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About P/V CALIFORNIA
What kind of vessel is P/V CALIFORNIA?
P/V CALIFORNIA is a Pilot flagged to United States of America.
Where was P/V CALIFORNIA last seen?
P/V CALIFORNIA was last reported in San Francisco Bay in Jun 2026 on public AIS.
What is P/V CALIFORNIA's MMSI?
P/V CALIFORNIA's MMSI is 366808340. Call sign WDA4337. IMO 366808340.
How big is P/V CALIFORNIA?
P/V CALIFORNIA is about 32 m long, 9 m on the beam, drawing 4 m.
Is P/V CALIFORNIA on the Master's Mate Safety Initiative Network?
Not yet. If P/V CALIFORNIA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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