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 (Inspected)
Calypso Cat
MMSI 367475110 · Call sign WDF6519
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
13.7 m
Beam
4.3 m
Draft
1.1 m
Call sign
WDF6519
Official No.
1230845
Hull ID
KRI45080L010
AIS reports
1
Registered in the United States, Calypso Cat is a 13.7-metre passenger boat. She's built with a 4.3-metre beam and a 1.1 m draft. Find her under MMSI 367475110, call sign WDF6519. For a boat that carries people, Calypso Cat can lean on the Master's Mate Safety Initiative Network — free distress alerting and a fleet that's paying attention.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard Calypso Cat 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 Calypso Cat 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 Calypso Cat 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 Calypso Cat and switch it all on
Free to join · nothing to install to start · cancel anytime
About Calypso Cat
What kind of vessel is Calypso Cat?
Calypso Cat is a Passenger (Inspected) flagged to United States of America.
What is Calypso Cat's MMSI?
Calypso Cat's MMSI is 367475110. Call sign WDF6519.
How big is Calypso Cat?
Calypso Cat is about 13.7 m long, 4.3 m on the beam, drawing 1.1 m.
Is Calypso Cat on the Master's Mate Safety Initiative Network?
Not yet. If Calypso Cat is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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