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
YIHAI18
Sierra Leone · last seen 1°N 104°E · Jun 2026 · MMSI 667002332
Not yet on Master's MateFlag
SLEFirst reported
Jun 2026
Last reported
Jun 2026
AIS reports
22
YIHAI18 is a boat on the Sierra Leone registry. Officially she's MMSI 667002332. YIHAI18 is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card
Is YIHAI18 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
Last known position · Jun 4, 2026
Position
1.2397° N, 103.9829° E
Crossing the Strait of Malacca? 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 YIHAI18 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 YIHAI18 and switch it all on
Free to join · nothing to install to start · cancel anytime
About YIHAI18
What kind of vessel is YIHAI18?
YIHAI18 is a vessel flagged to Sierra Leone.
Where was YIHAI18 last seen?
YIHAI18 was last reported in the Strait of Malacca in Jun 2026 on public AIS.
What is YIHAI18's MMSI?
YIHAI18's MMSI is 667002332.
Is YIHAI18 on the Master's Mate Safety Initiative Network?
Not yet. If YIHAI18 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.