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.
Towing Vessel
Long Island
MMSI 367376440 · Call sign WDI4974
Not yet on Master's MateType
Towing Vessel
Flag
USALength
28.9 m
Beam
10.4 m
Draft
4.4 m
Call sign
WDI4974
IMO
8644383
Official No.
121432
AIS reports
2
Long Island, a harbour workboat under American registration, measures 28.9 metres on deck. Below, she has a beam of 10.4 m and a draft of 4.4 m. On AIS she shows as MMSI 367376440, call sign WDI4974, IMO 8644383. Put Long Island on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for working boats
Built for boats that work — like Long Island.
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
Wherever Long Island 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Long Island 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 Long Island and switch it all on
Free to join · nothing to install to start · cancel anytime
About Long Island
What kind of vessel is Long Island?
Long Island is a Towing Vessel flagged to United States of America.
What is Long Island's MMSI?
Long Island's MMSI is 367376440. Call sign WDI4974. IMO 8644383.
How big is Long Island?
Long Island is about 28.9 m long, 10.4 m on the beam, drawing 4.4 m.
Is Long Island on the Master's Mate Safety Initiative Network?
Not yet. If Long Island is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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