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.

Recreational

U ONLY LIVE ONCE

U.S. Official No. 1161494

Not yet on Master's Mate

Type

Recreational

Flag

USA

Length

8.5 m

Beam

2.7 m

Draft

1.5 m

First reported

Jun 2026

AIS reports

U ONLY LIVE ONCE flies the American flag — an 8.5-metre recreational boat. U ONLY LIVE ONCE has a 2.7 m beam and a 1.5-metre draft. She's on record as U.S. official number 1161494. U ONLY LIVE ONCE is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

Free forever · No credit card · for recreational captains

Keep U ONLY LIVE ONCE looked after — even when you’re not aboard.

Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.

Look after her — claim free →

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

Wherever U ONLY LIVE ONCE 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 recreational captains

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

Joining the Safety Initiative Network doesn't just put U ONLY LIVE ONCE 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.

Onboard Cameras

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

Weather & Routing

GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.

Worldwide Charts

Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.

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.

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 U ONLY LIVE ONCE and switch it all on

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

Claim free → unlock everything

About U ONLY LIVE ONCE

What kind of vessel is U ONLY LIVE ONCE?

U ONLY LIVE ONCE is a Recreational flagged to United States of America.

What is U ONLY LIVE ONCE's U.S. Official No.?

U ONLY LIVE ONCE's U.S. Official No. is 1161494.

How big is U ONLY LIVE ONCE?

U ONLY LIVE ONCE is about 8.5 m long, 2.7 m on the beam, drawing 1.5 m.

Is U ONLY LIVE ONCE on the Master's Mate Safety Initiative Network?

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