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
SD G-1 HO
last seen 35°N 129°E · Jun 2026 · MMSI 440306380
Not yet on Master's MateFirst reported
Jun 2026
Last reported
Jun 2026
AIS reports
11
SD G-1 HO is a craft. She's listed under MMSI 440306380. It's free to add SD G-1 HO to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card
Is SD G-1 HO your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 15, 2026 18:37 UTC
Position
35.0940° N, 129.0714° E
Status
Under way (engine)
Speed
0.0 kn
Course
0°
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.
Free with your claim
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SD G-1 HO 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.
Claim SD G-1 HO and switch it all on
Free to join · nothing to install to start · cancel anytime
About SD G-1 HO
What kind of vessel is SD G-1 HO?
SD G-1 HO is a vessel.
Where was SD G-1 HO last seen?
SD G-1 HO was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is SD G-1 HO's MMSI?
SD G-1 HO's MMSI is 440306380.
Is SD G-1 HO on the Master's Mate Safety Initiative Network?
Not yet. If SD G-1 HO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.