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

Benjamin Oldendorff

MMSI 255806325

Not yet on Master's Mate

Flag

PRT

Length

200 m

IMO

9853034

AIS reports

Benjamin Oldendorff is a Portuguese boat, 200 metres from stem to stern. Her papers read MMSI 255806325, IMO 9853034. Claim Benjamin Oldendorff free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.

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Is Benjamin 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.

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

Wherever Benjamin 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 Benjamin 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 Benjamin Oldendorff and switch it all on

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About Benjamin Oldendorff

What kind of vessel is Benjamin Oldendorff?

Benjamin Oldendorff is a vessel flagged to Portugal.

What is Benjamin Oldendorff's MMSI?

Benjamin Oldendorff's MMSI is 255806325. IMO 9853034.

How big is Benjamin Oldendorff?

Benjamin Oldendorff is about 200 m long.

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

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