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.
Offshore Supply Vessel
Lena B
MMSI 367018710 · Call sign WDC4074
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
30.1 m
Beam
7.9 m
Draft
2.3 m
Call sign
WDC4074
Official No.
641701
AIS reports
1
Out of the United States, Lena B is a 30.1-metre utility vessel. She's built with a 7.9-metre beam and a 2.3-metre draft. She's on record as MMSI 367018710, call sign WDC4074. It's free to add Lena B to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card · for working boats
Built for boats that work — like Lena B.
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 Lena B 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 Lena B 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 Lena B and switch it all on
Free to join · nothing to install to start · cancel anytime
About Lena B
What kind of vessel is Lena B?
Lena B is a Offshore Supply Vessel flagged to United States of America.
What is Lena B's MMSI?
Lena B's MMSI is 367018710. Call sign WDC4074.
How big is Lena B?
Lena B is about 30.1 m long, 7.9 m on the beam, drawing 2.3 m.
Is Lena B on the Master's Mate Safety Initiative Network?
Not yet. If Lena B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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