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)
extreme one
MMSI 367602910 · Call sign WDH2959
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
10.1 m
Beam
3 m
Draft
1.5 m
Call sign
WDH2959
Official No.
1209659
Hull ID
GZW11233B707
AIS reports
1
extreme one is a passenger vessel hailing from the United States, 10.1 metres in length. She's built with a beam of 3 m and a 1.5 m draft. She's on record as MMSI 367602910, call sign WDH2959. For a boat that carries people, extreme one 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 extreme one 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 extreme one 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 extreme one 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 extreme one and switch it all on
Free to join · nothing to install to start · cancel anytime
About extreme one
What kind of vessel is extreme one?
extreme one is a Passenger (Inspected) flagged to United States of America.
What is extreme one's MMSI?
extreme one's MMSI is 367602910. Call sign WDH2959.
How big is extreme one?
extreme one is about 10.1 m long, 3 m on the beam, drawing 1.5 m.
Is extreme one on the Master's Mate Safety Initiative Network?
Not yet. If extreme one is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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