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
Mister B
MMSI 367615940 · Call sign WDH4267
Not yet on Master's MateType
Commercial Fishing Vessel
Flag
USALength
25.5 m
Beam
7.1 m
Draft
3.5 m
Call sign
WDH4267
IMO
8854809
Official No.
925764
AIS reports
1
Mister B flies the American flag — a 25.5-metre working fishing boat. She carries a beam of 7.1 m and a 3.5 m draft. Officially she's MMSI 367615940, call sign WDH4267, IMO 8854809. Mister B is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
Free forever · No credit card · for working captains
Know where the fleet is. Get Mister 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 Mister 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 Mister 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 Mister B and switch it all on
Free to join · nothing to install to start · cancel anytime
About Mister B
What kind of vessel is Mister B?
Mister B is a Commercial Fishing Vessel flagged to United States of America.
What is Mister B's MMSI?
Mister B's MMSI is 367615940. Call sign WDH4267. IMO 8854809.
How big is Mister B?
Mister B is about 25.5 m long, 7.1 m on the beam, drawing 3.5 m.
Is Mister B on the Master's Mate Safety Initiative Network?
Not yet. If Mister B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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