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
Harvey Supporter
MMSI 367507790 · Call sign WDF9689
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
89 m
Beam
19.5 m
Draft
7.5 m
Call sign
WDF9689
IMO
9581227
Official No.
1230059
AIS reports
3
Out of the United States, Harvey Supporter is an 89-metre harbour workboat. Her hull carries a beam measuring 19.5 metres and a draft of 7.5 m. On AIS she shows as MMSI 367507790, call sign WDF9689, IMO 9581227. Sign Harvey Supporter up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for working boats
Built for boats that work — like Harvey Supporter.
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 Harvey Supporter 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 Harvey Supporter 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 Harvey Supporter and switch it all on
Free to join · nothing to install to start · cancel anytime
About Harvey Supporter
What kind of vessel is Harvey Supporter?
Harvey Supporter is a Offshore Supply Vessel flagged to United States of America.
What is Harvey Supporter's MMSI?
Harvey Supporter's MMSI is 367507790. Call sign WDF9689. IMO 9581227.
How big is Harvey Supporter?
Harvey Supporter is about 89 m long, 19.5 m on the beam, drawing 7.5 m.
Is Harvey Supporter on the Master's Mate Safety Initiative Network?
Not yet. If Harvey Supporter is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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