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
Sir Frederick
MMSI 367564940 · Call sign WDG7205
Not yet on Master's MateType
Towing Vessel
Flag
USALength
16.5 m
Beam
6.1 m
Draft
2.3 m
Call sign
WDG7205
Official No.
670575
AIS reports
1
Sir Frederick flies the American flag — a 16.5-metre workboat. She's built with a 6.1-metre beam and a 2.3 m draft. On AIS she shows as MMSI 367564940, call sign WDG7205. It's free to add Sir Frederick to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card · for working boats
Built for boats that work — like Sir Frederick.
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 Sir Frederick 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 Sir Frederick 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 Sir Frederick and switch it all on
Free to join · nothing to install to start · cancel anytime
About Sir Frederick
What kind of vessel is Sir Frederick?
Sir Frederick is a Towing Vessel flagged to United States of America.
What is Sir Frederick's MMSI?
Sir Frederick's MMSI is 367564940. Call sign WDG7205.
How big is Sir Frederick?
Sir Frederick is about 16.5 m long, 6.1 m on the beam, drawing 2.3 m.
Is Sir Frederick on the Master's Mate Safety Initiative Network?
Not yet. If Sir Frederick is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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