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.
Cargo
CHELSEA B
MMSI 244650991 · Call sign PD9485
Not yet on Master's MateType
Cargo
Flag
NLDLength
22 m
Beam
7 m
Draft
0.3 m
Call sign
PD9485
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
CHELSEA B, a merchant vessel under Dutch registration, measures 22 metres on deck. She carries a beam of 7 m and a 0.3 m draft. Her registration reads MMSI 244650991, call sign PD9485. Join CHELSEA B to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for commercial operators
Eyes on CHELSEA B, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
53.2176° N, 7.4550° E
Transiting 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 CHELSEA B on the map. It hands you the full bridge:
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 CHELSEA B and switch it all on
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About CHELSEA B
What kind of vessel is CHELSEA B?
CHELSEA B is a Cargo flagged to Netherlands.
Where was CHELSEA B last seen?
CHELSEA B was last reported in the North Sea in Jun 2026 on public AIS.
What is CHELSEA B's MMSI?
CHELSEA B's MMSI is 244650991. Call sign PD9485.
How big is CHELSEA B?
CHELSEA B is about 22 m long, 7 m on the beam, drawing 0.3 m.
Is CHELSEA B on the Master's Mate Safety Initiative Network?
Not yet. If CHELSEA B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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