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
Olivia Grace
MMSI 366614000 · Call sign WCY4505
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
32 m
Beam
16.5 m
Draft
5.8 m
Call sign
WCY4505
IMO
8770388
Official No.
1066873
AIS reports
6
Registered in the United States, Olivia Grace is a 32-metre utility vessel. She carries a 16.5-metre beam and a 5.8-metre draft. On AIS she shows as MMSI 366614000, call sign WCY4505, IMO 8770388. Olivia Grace earns her keep on the water; the free Master's Mate Safety Initiative Network keeps a watching fleet and a distress mesh close at hand.
Free forever · No credit card · for working boats
Built for boats that work — like Olivia Grace.
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 Olivia Grace 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 Olivia Grace 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 Olivia Grace and switch it all on
Free to join · nothing to install to start · cancel anytime
About Olivia Grace
What kind of vessel is Olivia Grace?
Olivia Grace is a Offshore Supply Vessel flagged to United States of America.
What is Olivia Grace's MMSI?
Olivia Grace's MMSI is 366614000. Call sign WCY4505. IMO 8770388.
How big is Olivia Grace?
Olivia Grace is about 32 m long, 16.5 m on the beam, drawing 5.8 m.
Is Olivia Grace on the Master's Mate Safety Initiative Network?
Not yet. If Olivia Grace is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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