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)
SEA SPERIT
MMSI 367455660 · Call sign WDF4769
Not yet on Master's MateType
Passenger (Uninspected)
Flag
USALength
11.7 m
Beam
3.8 m
Draft
1.9 m
Call sign
WDF4769
Official No.
1037290
Hull ID
WHI38224K596
AIS reports
1
Registered in the United States, SEA SPERIT is an 11.7-metre passenger ship. She has a 3.8-metre beam and a draft measuring 1.9 metres. On AIS she appears as MMSI 367455660, call sign WDF4769. SEA SPERIT can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard SEA SPERIT 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 SEA SPERIT 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 SEA SPERIT 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 SEA SPERIT and switch it all on
Free to join · nothing to install to start · cancel anytime
About SEA SPERIT
What kind of vessel is SEA SPERIT?
SEA SPERIT is a Passenger (Uninspected) flagged to United States of America.
What is SEA SPERIT's MMSI?
SEA SPERIT's MMSI is 367455660. Call sign WDF4769.
How big is SEA SPERIT?
SEA SPERIT is about 11.7 m long, 3.8 m on the beam, drawing 1.9 m.
Is SEA SPERIT on the Master's Mate Safety Initiative Network?
Not yet. If SEA SPERIT is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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