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
Don Alfredo
MMSI 338124000 · Call sign WDH5927
Not yet on Master's MateType
Towing Vessel
Flag
USALength
27.5 m
Beam
9.8 m
Draft
4.7 m
Call sign
WDH5927
IMO
9314739
Official No.
617595
AIS reports
3
Don Alfredo is a working vessel registered in the United States, 27.5 metres on deck. Below, she has a beam of 9.8 m and a draft measuring 4.7 metres. Her papers read MMSI 338124000, call sign WDH5927, IMO 9314739. Don Alfredo earns her keep on the water; the free Master's Mate Safety Initiative Network keeps a watching fleet and a distress mesh close at hand.
Free forever · No credit card · for working boats
Built for boats that work — like Don Alfredo.
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 Don Alfredo 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 Don Alfredo 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 Don Alfredo and switch it all on
Free to join · nothing to install to start · cancel anytime
About Don Alfredo
What kind of vessel is Don Alfredo?
Don Alfredo is a Towing Vessel flagged to United States of America.
What is Don Alfredo's MMSI?
Don Alfredo's MMSI is 338124000. Call sign WDH5927. IMO 9314739.
How big is Don Alfredo?
Don Alfredo is about 27.5 m long, 9.8 m on the beam, drawing 4.7 m.
Is Don Alfredo on the Master's Mate Safety Initiative Network?
Not yet. If Don Alfredo is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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