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
ReHab
MMSI 338758000 · Call sign WDH7434
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
55.8 m
Beam
17.1 m
Draft
5.5 m
Call sign
WDH7434
IMO
9234551
Official No.
1088475
AIS reports
2
ReHab is an American utility boat — 55.8 metres overall. ReHab has a 17.1-metre beam and a 5.5-metre draft. On AIS she appears as MMSI 338758000, call sign WDH7434, IMO 9234551. Give ReHab the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
Free forever · No credit card · for working boats
Built for boats that work — like ReHab.
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 ReHab 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 ReHab 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 ReHab and switch it all on
Free to join · nothing to install to start · cancel anytime
About ReHab
What kind of vessel is ReHab?
ReHab is a Offshore Supply Vessel flagged to United States of America.
What is ReHab's MMSI?
ReHab's MMSI is 338758000. Call sign WDH7434. IMO 9234551.
How big is ReHab?
ReHab is about 55.8 m long, 17.1 m on the beam, drawing 5.5 m.
Is ReHab on the Master's Mate Safety Initiative Network?
Not yet. If ReHab is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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