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.

Towing Vessel

KATHERINE H

MMSI 366932130 · Call sign WDQ4110

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

36.2 m

Beam

10.4 m

Draft

4.5 m

Call sign

WDQ4110

IMO

7511993

Official No.

537848

AIS reports

KATHERINE H, a working vessel flagged in the United States, measures 36.2 metres on deck. She has a beam of 10.4 m and a draft measuring 4.5 metres. She broadcasts as MMSI 366932130, call sign WDQ4110, IMO 7511993. KATHERINE H can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.

Free forever · No credit card · for working boats

Built for boats that work — like KATHERINE H.

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 KATHERINE H 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 KATHERINE H 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 KATHERINE H and switch it all on

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

Claim free → unlock everything

About KATHERINE H

What kind of vessel is KATHERINE H?

KATHERINE H is a Towing Vessel flagged to United States of America.

What is KATHERINE H's MMSI?

KATHERINE H's MMSI is 366932130. Call sign WDQ4110. IMO 7511993.

How big is KATHERINE H?

KATHERINE H is about 36.2 m long, 10.4 m on the beam, drawing 4.5 m.

Is KATHERINE H on the Master's Mate Safety Initiative Network?

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