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.

Freight Ship

Maersk Detroit

MMSI 338474000 · Call sign WMDK

Not yet on Master's Mate

Type

Freight Ship

Flag

USA

Length

299.5 m

Beam

40 m

Draft

20.3 m

Call sign

WMDK

IMO

9333034

Official No.

1072393

AIS reports

Maersk Detroit, an American cargo vessel, measures 299.5 metres on deck. She carries a 40-metre beam and a 20.3-metre draft. Her registration reads MMSI 338474000, call sign WMDK, IMO 9333034. Maersk Detroit is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.

Free forever · No credit card · for commercial operators

Eyes on Maersk Detroit, 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 Maersk Detroit 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 Maersk Detroit 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 Maersk Detroit and switch it all on

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

Claim free → unlock everything

About Maersk Detroit

What kind of vessel is Maersk Detroit?

Maersk Detroit is a Freight Ship flagged to United States of America.

What is Maersk Detroit's MMSI?

Maersk Detroit's MMSI is 338474000. Call sign WMDK. IMO 9333034.

How big is Maersk Detroit?

Maersk Detroit is about 299.5 m long, 40 m on the beam, drawing 20.3 m.

Is Maersk Detroit on the Master's Mate Safety Initiative Network?

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