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
21 DONGBANG
MMSI 440314810 · Call sign 210003
Not yet on Master's MateType
Tanker
Flag
KORLength
49 m
Beam
9 m
Draft
4.4 m
Call sign
210003
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
59
21 DONGBANG is a tanker wearing South Korean colours, 49 metres on deck. Below, she has a beam of 9 m and a draft measuring 4.4 metres. She's on record as MMSI 440314810, call sign 210003. Bring 21 DONGBANG aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
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Eyes on 21 DONGBANG, 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 03:02 UTC
Position
35.1222° N, 129.0513° E
Status
Under way (engine)
Speed
0.0 kn
Course
46°
Destination
ULSAN
ETA
06-06 15:00 UTC
Transiting the Sea of Japan? You're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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Joining the Safety Initiative Network doesn't just put 21 DONGBANG 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.
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About 21 DONGBANG
What kind of vessel is 21 DONGBANG?
21 DONGBANG is a Tanker flagged to South Korea.
Where was 21 DONGBANG last seen?
21 DONGBANG was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is 21 DONGBANG's MMSI?
21 DONGBANG's MMSI is 440314810. Call sign 210003.
How big is 21 DONGBANG?
21 DONGBANG is about 49 m long, 9 m on the beam, drawing 4.4 m.
Is 21 DONGBANG on the Master's Mate Safety Initiative Network?
Not yet. If 21 DONGBANG is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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