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
WILLEM BARENTSZ
MMSI 244009421 · Call sign PB9857
Not yet on Master's MateType
Passenger
Flag
NLDLength
70 m
Beam
17 m
Draft
2.5 m
Call sign
PB9857
IMO
9807578
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
WILLEM BARENTSZ, an excursion vessel under Dutch registration, measures 70 metres on deck. WILLEM BARENTSZ has a 17 m beam and a 2.5-metre draft. Her papers read MMSI 244009421, call sign PB9857, IMO 9807578. Keep every soul aboard WILLEM BARENTSZ covered with the free Master's Mate Safety Initiative Network.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard WILLEM BARENTSZ 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 9, 2026 09:48 UTC
Position
53.3568° N, 5.2174° E
Status
Under way (engine)
Speed
0.1 kn
Course
36°
Destination
HAR<>TER
ETA
10-11 00:00 UTC
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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Joining the Safety Initiative Network doesn't just put WILLEM BARENTSZ 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 WILLEM BARENTSZ and switch it all on
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About WILLEM BARENTSZ
What kind of vessel is WILLEM BARENTSZ?
WILLEM BARENTSZ is a Passenger flagged to Netherlands.
Where was WILLEM BARENTSZ last seen?
WILLEM BARENTSZ was last reported in the North Sea in Jun 2026 on public AIS.
What is WILLEM BARENTSZ's MMSI?
WILLEM BARENTSZ's MMSI is 244009421. Call sign PB9857. IMO 9807578.
How big is WILLEM BARENTSZ?
WILLEM BARENTSZ is about 70 m long, 17 m on the beam, drawing 2.5 m.
Is WILLEM BARENTSZ on the Master's Mate Safety Initiative Network?
Not yet. If WILLEM BARENTSZ is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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