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.
Tanker
JO
MMSI 205371190 · Call sign OT3711
Not yet on Master's MateType
Tanker
Flag
BELLength
80 m
Beam
8 m
Call sign
OT3711
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
JO is a tank ship flagged in Belgium, 80 metres from stem to stern. JO has 8 metres in the beam. On AIS she appears as MMSI 205371190, call sign OT3711. Bring JO aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for commercial operators
Eyes on JO, 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
Live AIS position · Jun 9, 2026 06:17 UTC
Position
51.8932° N, 4.2288° E
Status
Moored
Speed
1.7 kn
Course
358°
Destination
ROTTERDAM HARBOR
ETA
12-31 11:09 UTC
Transiting the North Sea? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put JO 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 JO and switch it all on
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About JO
What kind of vessel is JO?
JO is a Tanker flagged to Belgium.
Where was JO last seen?
JO was last reported in the North Sea in Jun 2026 on public AIS.
What is JO's MMSI?
JO's MMSI is 205371190. Call sign OT3711.
How big is JO?
JO is about 80 m long, 8 m on the beam.
Is JO on the Master's Mate Safety Initiative Network?
Not yet. If JO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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