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.
Cargo
USHIO
MMSI 431019532 · Call sign JD5105
Not yet on Master's MateType
Cargo
Flag
JPNLength
123 m
Beam
24 m
Draft
5 m
Call sign
JD5105
IMO
9919412
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
19
On the Japanese registry, USHIO is a 123-metre merchant vessel. USHIO has a beam measuring 24 metres and a 5 m draft. She's on record as MMSI 431019532, call sign JD5105, IMO 9919412. Bring USHIO aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for commercial operators
Eyes on USHIO, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 3, 2026
Position
35.4713° N, 139.6866° E
Transiting 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 · for commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put USHIO on the map. It hands you the full bridge:
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
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 USHIO and switch it all on
Free to join · nothing to install to start · cancel anytime
About USHIO
What kind of vessel is USHIO?
USHIO is a Cargo flagged to Japan.
Where was USHIO last seen?
USHIO was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is USHIO's MMSI?
USHIO's MMSI is 431019532. Call sign JD5105. IMO 9919412.
How big is USHIO?
USHIO is about 123 m long, 24 m on the beam, drawing 5 m.
Is USHIO on the Master's Mate Safety Initiative Network?
Not yet. If USHIO 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.