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

HOS CALEDONIA

MMSI 367612490 · Call sign WDH3937

Not yet on Master's Mate

Type

Industrial Vessel

Flag

USA

Length

89.6 m

Beam

19.5 m

Draft

7.5 m

Call sign

WDH3937

IMO

9647629

Official No.

1244585

AIS reports

On the American registry, HOS CALEDONIA is an 89.6-metre commercial vessel. Below, she has a beam measuring 19.5 metres and a draft measuring 7.5 metres. On AIS she shows as MMSI 367612490, call sign WDH3937, IMO 9647629. Add HOS CALEDONIA to the Master's Mate Safety Initiative Network and share the water with a fleet that's paying attention — free.

Free forever · No credit card · for commercial operators

Eyes on HOS CALEDONIA, 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 HOS CALEDONIA 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 HOS CALEDONIA 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 HOS CALEDONIA and switch it all on

Free to join · nothing to install to start · cancel anytime

Claim free → unlock everything

About HOS CALEDONIA

What kind of vessel is HOS CALEDONIA?

HOS CALEDONIA is a Industrial Vessel flagged to United States of America.

What is HOS CALEDONIA's MMSI?

HOS CALEDONIA's MMSI is 367612490. Call sign WDH3937. IMO 9647629.

How big is HOS CALEDONIA?

HOS CALEDONIA is about 89.6 m long, 19.5 m on the beam, drawing 7.5 m.

Is HOS CALEDONIA on the Master's Mate Safety Initiative Network?

Not yet. If HOS CALEDONIA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).