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
Shelley Lab
Offshore Supply Vessel · United States of America · MMSI 367418240 · Call sign WNAO
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
70.1 m
Beam
17.1 m
Draft
5.5 m
Call sign
WNAO
IMO
9447407
Official No.
1216898
AIS reports
6
Shelley Lab is an American work boat, spanning 70.1 metres. She has a 17.1-metre beam and a draft measuring 5.5 metres. On the registers she's MMSI 367418240, call sign WNAO, IMO 9447407. Working vessels like Shelley Lab are never truly alone on the Master's Mate Safety Initiative Network — free, with a fleet on watch.
Free forever · No credit card · for working boats
Built for boats that work — like Shelley Lab.
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 Shelley Lab 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 Shelley Lab 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 Shelley Lab and switch it all on
Free to join · nothing to install to start · cancel anytime
About Shelley Lab
What kind of vessel is Shelley Lab?
Shelley Lab is a Offshore Supply Vessel flagged to United States of America.
What is Shelley Lab's MMSI?
Shelley Lab's MMSI is 367418240. Call sign WNAO. IMO 9447407.
How big is Shelley Lab?
Shelley Lab is about 70.1 m long, 17.1 m on the beam, drawing 5.5 m.
Is Shelley Lab on the Master's Mate Safety Initiative Network?
Not yet. If Shelley Lab is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.