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
DONGHAE9HO
MMSI 440738900 · Call sign 800
Not yet on Master's MateType
Tug
Flag
KORLength
30 m
Beam
10 m
Call sign
800
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
6
Registered in South Korea, DONGHAE9HO is a 30-metre tug. Her hull carries a 10-metre beam. Her registration reads MMSI 440738900, call sign 800. Put DONGHAE9HO on the free Master's Mate Safety Initiative Network and keep the working fleet looking out for each other.
Free forever · No credit card · for working boats
Built for boats that work — like DONGHAE9HO.
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
35.1077° N, 129.0939° E
Working 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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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put DONGHAE9HO 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 DONGHAE9HO and switch it all on
Free to join · nothing to install to start · cancel anytime
About DONGHAE9HO
What kind of vessel is DONGHAE9HO?
DONGHAE9HO is a Tug flagged to South Korea.
Where was DONGHAE9HO last seen?
DONGHAE9HO was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is DONGHAE9HO's MMSI?
DONGHAE9HO's MMSI is 440738900. Call sign 800.
How big is DONGHAE9HO?
DONGHAE9HO is about 30 m long, 10 m on the beam.
Is DONGHAE9HO on the Master's Mate Safety Initiative Network?
Not yet. If DONGHAE9HO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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