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.

Unclassified

Uttermost Witness

MMSI 367402120 · Call sign WDE8146

Not yet on Master's Mate

Type

Unclassified

Flag

USA

Length

28 m

Beam

6.7 m

Draft

4.7 m

Call sign

WDE8146

Official No.

1205822

AIS reports

Uttermost Witness, a vessel wearing American colours, measures 28 metres on deck. She has 6.7 metres in the beam and a draft of 4.7 m. She broadcasts as MMSI 367402120, call sign WDE8146. Uttermost Witness is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.

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Is Uttermost Witness your boat?

Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.

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

Wherever Uttermost Witness roams, you're never out there alone.

Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.

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

Joining the Safety Initiative Network doesn't just put Uttermost Witness on the map. It hands you the full bridge:

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.

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.

Onboard Cameras

Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.

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.

Hail Any Captain

A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.

Claim Uttermost Witness and switch it all on

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About Uttermost Witness

What kind of vessel is Uttermost Witness?

Uttermost Witness is a Unclassified flagged to United States of America.

What is Uttermost Witness's MMSI?

Uttermost Witness's MMSI is 367402120. Call sign WDE8146.

How big is Uttermost Witness?

Uttermost Witness is about 28 m long, 6.7 m on the beam, drawing 4.7 m.

Is Uttermost Witness on the Master's Mate Safety Initiative Network?

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