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

HNLMS Johan de Witt

MMSI 244527000

Not yet on Master's Mate

Flag

NLD

Length

176 m

IMO

9280768

AIS reports

HNLMS Johan de Witt, a craft flying the Dutch flag, measures 176 metres on deck. Look for MMSI 244527000, IMO 9280768. HNLMS Johan de Witt is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

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Wherever HNLMS Johan de Witt roams, you're never out there alone.

Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.

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Joining the Safety Initiative Network doesn't just put HNLMS Johan de Witt 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.

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About HNLMS Johan de Witt

What kind of vessel is HNLMS Johan de Witt?

HNLMS Johan de Witt is a vessel flagged to Netherlands.

What is HNLMS Johan de Witt's MMSI?

HNLMS Johan de Witt's MMSI is 244527000. IMO 9280768.

How big is HNLMS Johan de Witt?

HNLMS Johan de Witt is about 176 m long.

Is HNLMS Johan de Witt on the Master's Mate Safety Initiative Network?

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