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.
Recreational
Madrona
MMSI 367127390 · Call sign WDN9523
Not yet on Master's MateType
Recreational
Flag
USALength
17 m
Beam
5.3 m
Draft
2.6 m
Call sign
WDN9523
Official No.
1042828
AIS reports
3
Madrona is a family boat flying the American flag, measuring 17 metres. She carries a 5.3 m beam and a 2.6 m draft. On AIS she appears as MMSI 367127390, call sign WDN9523. Bring Madrona aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for recreational captains
Keep Madrona looked after — even when you’re not aboard.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Madrona 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 recreational captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Madrona on the map. It hands you the full bridge:
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Madrona and switch it all on
Free to join · nothing to install to start · cancel anytime
About Madrona
What kind of vessel is Madrona?
Madrona is a Recreational flagged to United States of America.
What is Madrona's MMSI?
Madrona's MMSI is 367127390. Call sign WDN9523.
How big is Madrona?
Madrona is about 17 m long, 5.3 m on the beam, drawing 2.6 m.
Is Madrona on the Master's Mate Safety Initiative Network?
Not yet. If Madrona is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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