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
201SINDONG
MMSI 440101120 · Call sign SSD
Not yet on Master's MateType
Tug
Flag
KORLength
25 m
Beam
10 m
Call sign
SSD
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
33
201SINDONG is a South Korean working tug, 25 metres from stem to stern. 201SINDONG has 10 metres in the beam. Find her under MMSI 440101120, call sign SSD. Give 201SINDONG the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
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Built for boats that work — like 201SINDONG.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
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Last known position · Jun 3, 2026
Position
35.0926° N, 129.0355° E
Working the Sea of Japan? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put 201SINDONG 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.
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About 201SINDONG
What kind of vessel is 201SINDONG?
201SINDONG is a Tug flagged to South Korea.
Where was 201SINDONG last seen?
201SINDONG was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is 201SINDONG's MMSI?
201SINDONG's MMSI is 440101120. Call sign SSD.
How big is 201SINDONG?
201SINDONG is about 25 m long, 10 m on the beam.
Is 201SINDONG on the Master's Mate Safety Initiative Network?
Not yet. If 201SINDONG is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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