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.
Vessel
Boss 300
MMSI 368440750 · Call sign WDQ6102
Not yet on Master's MateFlag
USACall sign
WDQ6102
Official No.
506133
AIS reports
1
Boss 300 flies the American flag — a boat. She broadcasts as MMSI 368440750, call sign WDQ6102. Give Boss 300 the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
Free forever · No credit card
Is Boss 300 your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Boss 300 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Boss 300 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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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 Boss 300 and switch it all on
Free to join · nothing to install to start · cancel anytime
About Boss 300
What kind of vessel is Boss 300?
Boss 300 is a vessel flagged to United States of America.
What is Boss 300's MMSI?
Boss 300's MMSI is 368440750. Call sign WDQ6102.
Is Boss 300 on the Master's Mate Safety Initiative Network?
Not yet. If Boss 300 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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