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.

Passenger (Uninspected)

POSEIDON

U.S. Official No. 1332534

Not yet on Master's Mate

Type

Passenger (Uninspected)

Flag

USA

Length

13.2 m

Beam

4 m

Draft

2 m

Hull ID

SSUKD079F223

First reported

Jun 2026

AIS reports

On the American registry, POSEIDON is a 13.2-metre passenger craft. Below, she has a 4 m beam and a draft measuring 2 metres. Find her under U.S. official number 1332534. Claim POSEIDON free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.

Free forever · No credit card · for passenger & charter operators

Keep every soul aboard POSEIDON safe.

Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.

Switch on the safety stack — free →

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

Wherever POSEIDON 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 passenger & charter operators

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

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

Distress Mesh

Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.

Live AIS & Traffic

See every vessel around you in real time. Closest-approach warnings before they matter.

Systems Monitoring

Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.

Weather & Routing

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

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 POSEIDON and switch it all on

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

Claim free → unlock everything

About POSEIDON

What kind of vessel is POSEIDON?

POSEIDON is a Passenger (Uninspected) flagged to United States of America.

What is POSEIDON's U.S. Official No.?

POSEIDON's U.S. Official No. is 1332534.

How big is POSEIDON?

POSEIDON is about 13.2 m long, 4 m on the beam, drawing 2 m.

Is POSEIDON on the Master's Mate Safety Initiative Network?

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