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
STEVEN J MASON
MMSI 366967660 · Call sign WDK9918
Not yet on Master's MateType
Towing Vessel
Flag
USALength
42.7 m
Beam
15.2 m
Draft
2.9 m
Call sign
WDK9918
Official No.
511330
AIS reports
2
Registered in the United States, STEVEN J MASON is a 42.7-metre utility vessel. She's built with a 15.2-metre beam and a 2.9-metre draft. On AIS she shows as MMSI 366967660, call sign WDK9918. STEVEN J MASON can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.
Free forever · No credit card · for working boats
Built for boats that work — like STEVEN J MASON.
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 STEVEN J MASON 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 STEVEN J MASON 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 STEVEN J MASON and switch it all on
Free to join · nothing to install to start · cancel anytime
About STEVEN J MASON
What kind of vessel is STEVEN J MASON?
STEVEN J MASON is a Towing Vessel flagged to United States of America.
What is STEVEN J MASON's MMSI?
STEVEN J MASON's MMSI is 366967660. Call sign WDK9918.
How big is STEVEN J MASON?
STEVEN J MASON is about 42.7 m long, 15.2 m on the beam, drawing 2.9 m.
Is STEVEN J MASON on the Master's Mate Safety Initiative Network?
Not yet. If STEVEN J MASON is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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