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.
Tug
GREEN CASTLE
Tug · last seen 37°N 127°E · Jun 2026 · MMSI 440131050 · Call sign 123 G C
Not yet on Master's MateType
Tug
Beam
33 m
Call sign
123 G C
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
6
GREEN CASTLE is a tugboat. She's built with a beam measuring 33 metres. She's on record as MMSI 440131050, call sign 123 G C. Join GREEN CASTLE to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for working boats
Built for boats that work — like GREEN CASTLE.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 15, 2026 17:00 UTC
Position
37.4504° N, 126.5938° E
Speed
0.0 kn
Course
151°
Working the Yellow Sea? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put GREEN CASTLE on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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 GREEN CASTLE and switch it all on
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About GREEN CASTLE
What kind of vessel is GREEN CASTLE?
GREEN CASTLE is a Tug.
Where was GREEN CASTLE last seen?
GREEN CASTLE was last reported in the Yellow Sea in Jun 2026 on public AIS.
What is GREEN CASTLE's MMSI?
GREEN CASTLE's MMSI is 440131050. Call sign 123 G C.
Is GREEN CASTLE on the Master's Mate Safety Initiative Network?
Not yet. If GREEN CASTLE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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