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
PR.WILLEM ALEXANDER
MMSI 244574000 · Call sign PBAA
Not yet on Master's MateType
Passenger
Flag
NLDLength
38 m
Beam
18 m
Call sign
PBAA
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
PR.WILLEM ALEXANDER is a passenger ferry listed on the the Netherlands registry, 38 metres long. She has a beam measuring 18 metres. On AIS she appears as MMSI 244574000, call sign PBAA. PR.WILLEM ALEXANDER can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard PR.WILLEM ALEXANDER 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
Live AIS position · Jun 10, 2026 00:04 UTC
Position
51.4439° N, 3.5983° E
Status
Moored
Speed
0.0 kn
Course
266°
Sailing the North Sea? 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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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put PR.WILLEM ALEXANDER 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 PR.WILLEM ALEXANDER and switch it all on
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About PR.WILLEM ALEXANDER
What kind of vessel is PR.WILLEM ALEXANDER?
PR.WILLEM ALEXANDER is a Passenger flagged to Netherlands.
Where was PR.WILLEM ALEXANDER last seen?
PR.WILLEM ALEXANDER was last reported in the North Sea in Jun 2026 on public AIS.
What is PR.WILLEM ALEXANDER's MMSI?
PR.WILLEM ALEXANDER's MMSI is 244574000. Call sign PBAA.
How big is PR.WILLEM ALEXANDER?
PR.WILLEM ALEXANDER is about 38 m long, 18 m on the beam.
Is PR.WILLEM ALEXANDER on the Master's Mate Safety Initiative Network?
Not yet. If PR.WILLEM ALEXANDER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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