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.
Tank Barge
Double Skin 501
MMSI 367653080 · Call sign WDH7940
Not yet on Master's MateType
Tank Barge
Flag
USALength
106.1 m
Beam
18.9 m
Draft
7.5 m
Call sign
WDH7940
Official No.
1251823
AIS reports
1
Registered in the United States, Double Skin 501 is a 106.1-metre tank vessel. Her hull carries a 18.9-metre beam and a draft measuring 7.5 metres. She's listed under MMSI 367653080, call sign WDH7940. Claim Double Skin 501 free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Free forever · No credit card · for commercial operators
Eyes on Double Skin 501, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Double Skin 501 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 commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Double Skin 501 on the map. It hands you the full bridge:
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 Double Skin 501 and switch it all on
Free to join · nothing to install to start · cancel anytime
About Double Skin 501
What kind of vessel is Double Skin 501?
Double Skin 501 is a Tank Barge flagged to United States of America.
What is Double Skin 501's MMSI?
Double Skin 501's MMSI is 367653080. Call sign WDH7940.
How big is Double Skin 501?
Double Skin 501 is about 106.1 m long, 18.9 m on the beam, drawing 7.5 m.
Is Double Skin 501 on the Master's Mate Safety Initiative Network?
Not yet. If Double Skin 501 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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