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)
SUM FUN
MMSI 367304670 · Call sign WCX6853
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
17.5 m
Beam
6.1 m
Draft
1.6 m
Call sign
WCX6853
Official No.
281982
AIS reports
1
SUM FUN, an American passenger vessel, measures 17.5 metres on deck. She's built with a 6.1 m beam and a 1.6 m draft. She's on record as MMSI 367304670, call sign WCX6853. SUM FUN is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard SUM FUN 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 SUM FUN 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 SUM FUN 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 SUM FUN and switch it all on
Free to join · nothing to install to start · cancel anytime
About SUM FUN
What kind of vessel is SUM FUN?
SUM FUN is a Passenger (Inspected) flagged to United States of America.
What is SUM FUN's MMSI?
SUM FUN's MMSI is 367304670. Call sign WCX6853.
How big is SUM FUN?
SUM FUN is about 17.5 m long, 6.1 m on the beam, drawing 1.6 m.
Is SUM FUN on the Master's Mate Safety Initiative Network?
Not yet. If SUM FUN is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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