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.

Vessel

Penelope Oldendorff

MMSI 636092850

Not yet on Master's Mate

Flag

LBR

Length

255 m

IMO

9464596

AIS reports

A Liberian craft, Penelope Oldendorff measures 255 metres. Officially she's MMSI 636092850, IMO 9464596. Penelope Oldendorff can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.

Free forever · No credit card

Is Penelope Oldendorff 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.

Claim this boat — free →

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

Wherever Penelope Oldendorff 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

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

Joining the Safety Initiative Network doesn't just put Penelope Oldendorff 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 Penelope Oldendorff and switch it all on

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Claim free → unlock everything

About Penelope Oldendorff

What kind of vessel is Penelope Oldendorff?

Penelope Oldendorff is a vessel flagged to Liberia.

What is Penelope Oldendorff's MMSI?

Penelope Oldendorff's MMSI is 636092850. IMO 9464596.

How big is Penelope Oldendorff?

Penelope Oldendorff is about 255 m long.

Is Penelope Oldendorff on the Master's Mate Safety Initiative Network?

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