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

RV Johan Hjort

MMSI 257139000

Not yet on Master's Mate

Flag

NOR

Length

64 m

IMO

8915768

AIS reports

RV Johan Hjort, a Norwegian craft, measures 64 metres on deck. She's listed under MMSI 257139000, IMO 8915768. Bring RV Johan Hjort aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.

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Is RV Johan Hjort 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 RV Johan Hjort 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 RV Johan Hjort 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 RV Johan Hjort and switch it all on

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About RV Johan Hjort

What kind of vessel is RV Johan Hjort?

RV Johan Hjort is a vessel flagged to Norway.

What is RV Johan Hjort's MMSI?

RV Johan Hjort's MMSI is 257139000. IMO 8915768.

How big is RV Johan Hjort?

RV Johan Hjort is about 64 m long.

Is RV Johan Hjort on the Master's Mate Safety Initiative Network?

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