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
301 SUNG SIN
MMSI 440110300 · Call sign D7QS
Not yet on Master's MateType
Tug
Flag
KORLength
28 m
Beam
6 m
Draft
4 m
Call sign
D7QS
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
66
301 SUNG SIN is a harbour tug flying the South Korean flag, 28 metres LOA. Below, she has a beam of 6 m and a draft of 4 m. On the registers she's MMSI 440110300, call sign D7QS. 301 SUNG SIN earns her keep on the water; the free Master's Mate Safety Initiative Network keeps a watching fleet and a distress mesh close at hand.
Free forever · No credit card · for working boats
Built for boats that work — like 301 SUNG SIN.
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
Last known position · Jun 4, 2026
Position
35.1012° N, 129.0547° 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 301 SUNG SIN 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 301 SUNG SIN and switch it all on
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About 301 SUNG SIN
What kind of vessel is 301 SUNG SIN?
301 SUNG SIN is a Tug flagged to South Korea.
Where was 301 SUNG SIN last seen?
301 SUNG SIN was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is 301 SUNG SIN's MMSI?
301 SUNG SIN's MMSI is 440110300. Call sign D7QS.
How big is 301 SUNG SIN?
301 SUNG SIN is about 28 m long, 6 m on the beam, drawing 4 m.
Is 301 SUNG SIN on the Master's Mate Safety Initiative Network?
Not yet. If 301 SUNG SIN is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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