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
Moonlight Serenade
MMSI 338400000 · Call sign WDC4667
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
60.4 m
Beam
13.4 m
Draft
4.9 m
Call sign
WDC4667
IMO
9009334
Official No.
977583
AIS reports
2
Moonlight Serenade is a workboat under American registration, 60.4 metres in length. She carries a 13.4 m beam and a 4.9 m draft. She's on record as MMSI 338400000, call sign WDC4667, IMO 9009334. Put Moonlight Serenade on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for working boats
Built for boats that work — like Moonlight Serenade.
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 Moonlight Serenade 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 Moonlight Serenade 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 Moonlight Serenade and switch it all on
Free to join · nothing to install to start · cancel anytime
About Moonlight Serenade
What kind of vessel is Moonlight Serenade?
Moonlight Serenade is a Offshore Supply Vessel flagged to United States of America.
What is Moonlight Serenade's MMSI?
Moonlight Serenade's MMSI is 338400000. Call sign WDC4667. IMO 9009334.
How big is Moonlight Serenade?
Moonlight Serenade is about 60.4 m long, 13.4 m on the beam, drawing 4.9 m.
Is Moonlight Serenade on the Master's Mate Safety Initiative Network?
Not yet. If Moonlight Serenade is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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