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
YU YUAN 101
MMSI 416004087 · Call sign BR3427
Not yet on Master's MateType
Tug
Flag
TWNCall sign
BR3427
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
79
YU YUAN 101 is a working tug flagged in Taiwan. On AIS she appears as MMSI 416004087, call sign BR3427. Put YU YUAN 101 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 YU YUAN 101.
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
Live AIS position · Jun 9, 2026 03:23 UTC
Position
25.1565° N, 121.3935° E
Speed
7.7 kn
Course
169°
Working the East China Sea? 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 · for working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put YU YUAN 101 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 YU YUAN 101 and switch it all on
Free to join · nothing to install to start · cancel anytime
About YU YUAN 101
What kind of vessel is YU YUAN 101?
YU YUAN 101 is a Tug flagged to Taiwan.
Where was YU YUAN 101 last seen?
YU YUAN 101 was last reported in the East China Sea in Jun 2026 on public AIS.
What is YU YUAN 101's MMSI?
YU YUAN 101's MMSI is 416004087. Call sign BR3427.
Is YU YUAN 101 on the Master's Mate Safety Initiative Network?
Not yet. If YU YUAN 101 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.