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.

UNSPECIFIED

C. Z. KELLER

U.S. Official No. 651263

Not yet on Master's Mate

Type

UNSPECIFIED

Flag

USA

Length

17.1 m

Beam

4.4 m

Draft

2.1 m

First reported

Jun 2026

AIS reports

C. Z. KELLER is a vessel listed on the the United States registry, 17.1 metres LOA. She has a 4.4-metre beam and a draft of 2.1 m. Officially she's U.S. official number 651263. C. Z. KELLER is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

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Is C. Z. KELLER 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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Wherever C. Z. KELLER 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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Joining the Safety Initiative Network doesn't just put C. Z. KELLER 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 C. Z. KELLER and switch it all on

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About C. Z. KELLER

What kind of vessel is C. Z. KELLER?

C. Z. KELLER is a UNSPECIFIED flagged to United States of America.

What is C. Z. KELLER's U.S. Official No.?

C. Z. KELLER's U.S. Official No. is 651263.

How big is C. Z. KELLER?

C. Z. KELLER is about 17.1 m long, 4.4 m on the beam, drawing 2.1 m.

Is C. Z. KELLER on the Master's Mate Safety Initiative Network?

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