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.
Commercial Fishing Vessel
MARY B
MMSI 366599930 · Call sign WY9972
Not yet on Master's MateType
Commercial Fishing Vessel
Flag
USALength
18.7 m
Beam
5.5 m
Draft
2.5 m
Call sign
WY9972
Official No.
511579
AIS reports
1
MARY B flies the American flag — an 18.7-metre offshore fishing boat. MARY B has a beam of 5.5 m and a 2.5-metre draft. She's listed under MMSI 366599930, call sign WY9972. MARY B can join the Master's Mate Safety Initiative Network free, for live AIS, weather, and a network of boats ready to help when it counts.
Free forever · No credit card · for working captains
Know where the fleet is. Get MARY B home safe.
Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.
Keep the fleet in sight — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever MARY B 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 captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put MARY B on the map. It hands you the full bridge:
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.
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.
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 MARY B and switch it all on
Free to join · nothing to install to start · cancel anytime
About MARY B
What kind of vessel is MARY B?
MARY B is a Commercial Fishing Vessel flagged to United States of America.
What is MARY B's MMSI?
MARY B's MMSI is 366599930. Call sign WY9972.
How big is MARY B?
MARY B is about 18.7 m long, 5.5 m on the beam, drawing 2.5 m.
Is MARY B on the Master's Mate Safety Initiative Network?
Not yet. If MARY B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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