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
Ms Melissa
MMSI 367463990 · Call sign WDF5504
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
43.9 m
Beam
11 m
Draft
3.7 m
Call sign
WDF5504
IMO
8964848
Official No.
1074295
AIS reports
1
Ms Melissa, a service vessel under American registration, measures 43.9 metres on deck. Ms Melissa has a 11-metre beam and a 3.7 m draft. She broadcasts as MMSI 367463990, call sign WDF5504, IMO 8964848. Join Ms Melissa to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for working boats
Built for boats that work — like Ms Melissa.
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 Ms Melissa 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 Ms Melissa 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 Ms Melissa and switch it all on
Free to join · nothing to install to start · cancel anytime
About Ms Melissa
What kind of vessel is Ms Melissa?
Ms Melissa is a Offshore Supply Vessel flagged to United States of America.
What is Ms Melissa's MMSI?
Ms Melissa's MMSI is 367463990. Call sign WDF5504. IMO 8964848.
How big is Ms Melissa?
Ms Melissa is about 43.9 m long, 11 m on the beam, drawing 3.7 m.
Is Ms Melissa on the Master's Mate Safety Initiative Network?
Not yet. If Ms Melissa is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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