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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.
Industrial Vessel

STIM STAR IV

MMSI 367653540 · Call sign WDH7985

Not yet on Master's Mate
Type
Industrial Vessel
Flag
USAUSA
Length
84.9 m
Beam
20.1 m
Draft
7.9 m
Call sign
WDH7985
IMO
9755098
Official No.
1256870
AIS reports
1

On the American registry, STIM STAR IV is an 84.9-metre merchant vessel. Her hull carries 20.1 metres in the beam and a draft of 7.9 m. Her registration reads MMSI 367653540, call sign WDH7985, IMO 9755098. Bring STIM STAR IV aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.

Free forever · No credit card · for commercial operators

Eyes on STIM STAR IV, around the clock.

Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.

Put her on the dashboard — free →

Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers

Wherever STIM STAR IV 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 commercial operators

The most powerful cruising platform ever built — yours, free.

Joining the Safety Initiative Network doesn't just put STIM STAR IV on the map. It hands you the full bridge:

Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
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 STIM STAR IV and switch it all on
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About STIM STAR IV

What kind of vessel is STIM STAR IV?
STIM STAR IV is a Industrial Vessel flagged to United States of America.
What is STIM STAR IV's MMSI?
STIM STAR IV's MMSI is 367653540. Call sign WDH7985. IMO 9755098.
How big is STIM STAR IV?
STIM STAR IV is about 84.9 m long, 20.1 m on the beam, drawing 7.9 m.
Is STIM STAR IV on the Master's Mate Safety Initiative Network?
Not yet. If STIM STAR IV is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).

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