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)
Alex J
MMSI 366887810 · Call sign WDB3503
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
11.9 m
Beam
2.6 m
Draft
1.5 m
Call sign
WDB3503
Official No.
1936129
AIS reports
1
Alex J flies the American flag — an 11.9-metre passenger ferry. Below, she has a beam measuring 2.6 metres and a draft of 1.5 m. She's listed under MMSI 366887810, call sign WDB3503. Add Alex J to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard Alex J 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 Alex J 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 Alex J 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 Alex J and switch it all on
Free to join · nothing to install to start · cancel anytime
About Alex J
What kind of vessel is Alex J?
Alex J is a Passenger (Inspected) flagged to United States of America.
What is Alex J's MMSI?
Alex J's MMSI is 366887810. Call sign WDB3503.
How big is Alex J?
Alex J is about 11.9 m long, 2.6 m on the beam, drawing 1.5 m.
Is Alex J on the Master's Mate Safety Initiative Network?
Not yet. If Alex J is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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