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

Frank R. Alter

MMSI 367001770 · Call sign WDC3029

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

46.5 m

Beam

13.7 m

Draft

2.8 m

Call sign

WDC3029

Official No.

531539

AIS reports

Frank R. Alter, a working craft on the the United States registry, measures 46.5 metres on deck. Her hull carries 13.7 metres in the beam and a draft of 2.8 m. On AIS she appears as MMSI 367001770, call sign WDC3029. Claim Frank R. Alter free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.

Free forever · No credit card · for working boats

Built for boats that work — like Frank R. Alter.

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 Frank R. Alter 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 Frank R. Alter 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 Frank R. Alter and switch it all on

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Claim free → unlock everything

About Frank R. Alter

What kind of vessel is Frank R. Alter?

Frank R. Alter is a Towing Vessel flagged to United States of America.

What is Frank R. Alter's MMSI?

Frank R. Alter's MMSI is 367001770. Call sign WDC3029.

How big is Frank R. Alter?

Frank R. Alter is about 46.5 m long, 13.7 m on the beam, drawing 2.8 m.

Is Frank R. Alter on the Master's Mate Safety Initiative Network?

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