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
SEA SUB
MMSI 367760730 · Call sign WDJ2686
Not yet on Master's MateType
Passenger
Flag
USALength
22 m
Beam
5 m
Draft
1.8 m
Call sign
WDJ2686
Official No.
539045
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
66
SEA SUB flies the American flag — a 22-metre passenger craft. Below, she has a beam of 5 m and a draft measuring 1.8 metres. She's on record as MMSI 367760730, call sign WDJ2686. SEA SUB carries passengers; the free Master's Mate Safety Initiative Network helps carry the watch, with distress alerting and a network nearby.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard SEA SUB 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
Last known position · Jun 3, 2026
Position
27.7817° N, 82.7805° W
Sailing the Gulf of Mexico? 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 SUB 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 SUB and switch it all on
Free to join · nothing to install to start · cancel anytime
About SEA SUB
What kind of vessel is SEA SUB?
SEA SUB is a Passenger flagged to United States of America.
Where was SEA SUB last seen?
SEA SUB was last reported in the Gulf of Mexico in Jun 2026 on public AIS.
What is SEA SUB's MMSI?
SEA SUB's MMSI is 367760730. Call sign WDJ2686.
How big is SEA SUB?
SEA SUB is about 22 m long, 5 m on the beam, drawing 1.8 m.
Is SEA SUB on the Master's Mate Safety Initiative Network?
Not yet. If SEA SUB is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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