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.

Vessel

505 SAM KWANG

MMSI 440106080 · Call sign 6488401

Not yet on Master's Mate

Flag

KOR

Length

23 m

Beam

5 m

Call sign

6488401

First reported

Jun 2026

Last reported

Jun 2026

AIS reports

505 SAM KWANG, a boat under the South Korean flag, measures 23 metres on deck. 505 SAM KWANG has a beam measuring 5 metres. She broadcasts as MMSI 440106080, call sign 6488401. 505 SAM KWANG is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

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Live AIS position · Jun 9, 2026 04:23 UTC

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Position

35.1928° N, 129.3749° E

Speed

7.8 kn

Course

112°

Crossing 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 505 SAM KWANG on the map. It hands you the full bridge:

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.

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.

Onboard Cameras

Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.

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.

Hail Any Captain

A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.

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About 505 SAM KWANG

What kind of vessel is 505 SAM KWANG?

505 SAM KWANG is a vessel flagged to South Korea.

Where was 505 SAM KWANG last seen?

505 SAM KWANG was last reported in the Sea of Japan in Jun 2026 on public AIS.

What is 505 SAM KWANG's MMSI?

505 SAM KWANG's MMSI is 440106080. Call sign 6488401.

How big is 505 SAM KWANG?

505 SAM KWANG is about 23 m long, 5 m on the beam.

Is 505 SAM KWANG on the Master's Mate Safety Initiative Network?

Not yet. If 505 SAM KWANG is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).