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
Yosemite Trader
Towing Vessel · United States of America · MMSI 338431000 · Call sign WUSD
Not yet on Master's MateType
Towing Vessel
Flag
USALength
179 m
Beam
10.4 m
Draft
4 m
Call sign
WUSD
IMO
9573658
Official No.
565279
AIS reports
8
Yosemite Trader is an American working craft — 179 metres overall. Her hull carries 10.4 metres in the beam and a draft of 4 m. She's on record as MMSI 338431000, call sign WUSD, IMO 9573658. Yosemite Trader 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 Yosemite Trader.
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 Yosemite Trader 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 Yosemite Trader 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 Yosemite Trader and switch it all on
Free to join · nothing to install to start · cancel anytime
About Yosemite Trader
What kind of vessel is Yosemite Trader?
Yosemite Trader is a Towing Vessel flagged to United States of America.
What is Yosemite Trader's MMSI?
Yosemite Trader's MMSI is 338431000. Call sign WUSD. IMO 9573658.
How big is Yosemite Trader?
Yosemite Trader is about 179 m long, 10.4 m on the beam, drawing 4 m.
Is Yosemite Trader on the Master's Mate Safety Initiative Network?
Not yet. If Yosemite Trader is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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