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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.
Tanker
MARTENS 4
MMSI 244630027 · Call sign PG5305
Not yet on Master's MateType
Tanker
Flag
NLDLength
80 m
Beam
9 m
Call sign
PG5305
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
On the Dutch registry, MARTENS 4 is an 80-metre tank ship. MARTENS 4 has a 9-metre beam. She's listed under MMSI 244630027, call sign PG5305. Join MARTENS 4 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 MARTENS 4, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
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Live AIS position · Jun 9, 2026 18:59 UTC
Position
51.9323° N, 4.2134° E
Status
Under way (engine)
Speed
8.4 kn
Course
128°
Destination
DORDRECHT 1E MERWEDE
ETA
06-02 16:04 UTC
Transiting the North Sea? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put MARTENS 4 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 MARTENS 4 and switch it all on
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About MARTENS 4
What kind of vessel is MARTENS 4?
MARTENS 4 is a Tanker flagged to Netherlands.
Where was MARTENS 4 last seen?
MARTENS 4 was last reported in the North Sea in Jun 2026 on public AIS.
What is MARTENS 4's MMSI?
MARTENS 4's MMSI is 244630027. Call sign PG5305.
How big is MARTENS 4?
MARTENS 4 is about 80 m long, 9 m on the beam.
Is MARTENS 4 on the Master's Mate Safety Initiative Network?
Not yet. If MARTENS 4 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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