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

I-NO-U-IV

U.S. Official No. 253984

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

10.4 m

Beam

2.9 m

Draft

1.5 m

First reported

Jun 2026

AIS reports

Out of the United States, I-NO-U-IV is a 10.4-metre working vessel. Below, she has 2.9 metres in the beam and a draft measuring 1.5 metres. On the registers she's U.S. official number 253984. I-NO-U-IV 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 working boats

Built for boats that work — like I-NO-U-IV.

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 I-NO-U-IV 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 I-NO-U-IV 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 I-NO-U-IV and switch it all on

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About I-NO-U-IV

What kind of vessel is I-NO-U-IV?

I-NO-U-IV is a Towing Vessel flagged to United States of America.

What is I-NO-U-IV's U.S. Official No.?

I-NO-U-IV's U.S. Official No. is 253984.

How big is I-NO-U-IV?

I-NO-U-IV is about 10.4 m long, 2.9 m on the beam, drawing 1.5 m.

Is I-NO-U-IV on the Master's Mate Safety Initiative Network?

Not yet. If I-NO-U-IV is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).