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.
Tug
ALTON A
MMSI 366696440 · Call sign WDK4588
Not yet on Master's MateType
Tug
Flag
USALength
13 m
Beam
5 m
Draft
2 m
Call sign
WDK4588
Official No.
ME3624R
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
68
Registered in the United States, ALTON A is a 13-metre tugboat. She carries 5 metres in the beam and a 2 m draft. Find her under MMSI 366696440, call sign WDK4588. Claim ALTON A free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Free forever · No credit card · for working boats
Built for boats that work — like ALTON A.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 3, 2026
Position
44.1123° N, 69.1007° W
Working the Gulf of Maine? You're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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Joining the Safety Initiative Network doesn't just put ALTON A on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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 ALTON A and switch it all on
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About ALTON A
What kind of vessel is ALTON A?
ALTON A is a Tug flagged to United States of America.
Where was ALTON A last seen?
ALTON A was last reported in the Gulf of Maine in Jun 2026 on public AIS.
What is ALTON A's MMSI?
ALTON A's MMSI is 366696440. Call sign WDK4588.
How big is ALTON A?
ALTON A is about 13 m long, 5 m on the beam, drawing 2 m.
Is ALTON A on the Master's Mate Safety Initiative Network?
Not yet. If ALTON A is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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