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
Mauna Loa
MMSI 366998090 · Call sign WDC2819
Not yet on Master's MateType
Towing Vessel
Flag
USALength
34.4 m
Beam
8.2 m
Draft
4.7 m
Call sign
WDC2819
IMO
5229704
Official No.
290484
AIS reports
1
Mauna Loa is a harbour workboat on the the United States registry, 34.4 metres long. She has a 8.2-metre beam and a draft of 4.7 m. Officially she's MMSI 366998090, call sign WDC2819, IMO 5229704. The Master's Mate Safety Initiative Network welcomes Mauna Loa — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for working boats
Built for boats that work — like Mauna Loa.
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 Mauna Loa 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 Mauna Loa 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 Mauna Loa and switch it all on
Free to join · nothing to install to start · cancel anytime
About Mauna Loa
What kind of vessel is Mauna Loa?
Mauna Loa is a Towing Vessel flagged to United States of America.
What is Mauna Loa's MMSI?
Mauna Loa's MMSI is 366998090. Call sign WDC2819. IMO 5229704.
How big is Mauna Loa?
Mauna Loa is about 34.4 m long, 8.2 m on the beam, drawing 4.7 m.
Is Mauna Loa on the Master's Mate Safety Initiative Network?
Not yet. If Mauna Loa is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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