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
SASHIRO
MMSI 431008605 · Call sign JD4099
Not yet on Master's MateType
Tug
Flag
JPNLength
35 m
Beam
12 m
Draft
3.5 m
Call sign
JD4099
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
22
SASHIRO is a tug sailing under the Japanese flag, 35 metres on deck. She has a 12-metre beam and a draft measuring 3.5 metres. She's listed under MMSI 431008605, call sign JD4099. The Master's Mate Safety Initiative Network welcomes SASHIRO — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for working boats
Built for boats that work — like SASHIRO.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
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Last known position · Jun 3, 2026
Position
36.3096° N, 140.5786° E
Working the Sea of Japan? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put SASHIRO 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 SASHIRO and switch it all on
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About SASHIRO
What kind of vessel is SASHIRO?
SASHIRO is a Tug flagged to Japan.
Where was SASHIRO last seen?
SASHIRO was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is SASHIRO's MMSI?
SASHIRO's MMSI is 431008605. Call sign JD4099.
How big is SASHIRO?
SASHIRO is about 35 m long, 12 m on the beam, drawing 3.5 m.
Is SASHIRO on the Master's Mate Safety Initiative Network?
Not yet. If SASHIRO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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