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)

MARY O

U.S. Official No. 648485

Not yet on Master's Mate

Type

Passenger (Uninspected)

Flag

USA

Length

10.9 m

Beam

3.4 m

Draft

1.9 m

Hull ID

HUN35102M81H

First reported

Jun 2026

AIS reports

Registered in the United States, MARY O is a 10.9-metre ferry. She's built with a beam of 3.4 m and a 1.9-metre draft. She's listed under U.S. official number 648485. For a boat that carries people, MARY O can lean on the Master's Mate Safety Initiative Network — free distress alerting and a fleet that's paying attention.

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

Keep every soul aboard MARY O 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 MARY O 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 MARY O 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 MARY O and switch it all on

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

Claim free → unlock everything

About MARY O

What kind of vessel is MARY O?

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

What is MARY O's U.S. Official No.?

MARY O's U.S. Official No. is 648485.

How big is MARY O?

MARY O is about 10.9 m long, 3.4 m on the beam, drawing 1.9 m.

Is MARY O on the Master's Mate Safety Initiative Network?

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