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.
Passenger (Uninspected)
Griffin
MMSI 366804980 · Call sign WDA4028
Not yet on Master's MateType
Passenger (Uninspected)
Flag
USALength
17.7 m
Beam
4.4 m
Draft
1.8 m
Call sign
WDA4028
Official No.
1108146
Hull ID
BTL58028H001
AIS reports
1
Griffin, a ferry vessel wearing American colours, measures 17.7 metres on deck. She has a 4.4 m beam and a draft of 1.8 m. On the registers she's MMSI 366804980, call sign WDA4028. Put Griffin on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard Griffin safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Griffin 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Griffin on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
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 Griffin and switch it all on
Free to join · nothing to install to start · cancel anytime
About Griffin
What kind of vessel is Griffin?
Griffin is a Passenger (Uninspected) flagged to United States of America.
What is Griffin's MMSI?
Griffin's MMSI is 366804980. Call sign WDA4028.
How big is Griffin?
Griffin is about 17.7 m long, 4.4 m on the beam, drawing 1.8 m.
Is Griffin on the Master's Mate Safety Initiative Network?
Not yet. If Griffin is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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