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.
Tanker
EISEKI
Tanker · Japan · last seen 35°N 135°E · Jun 2026 · MMSI 431501663 · Call sign JL6604
Not yet on Master's MateType
Tanker
Flag
JPNLength
69 m
Beam
12 m
Draft
4.7 m
Call sign
JL6604
IMO
9239678
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
8
Registered in Japan, EISEKI is a 69-metre tank ship. Her hull carries 12 metres in the beam and a draft measuring 4.7 metres. Officially she's MMSI 431501663, call sign JL6604, IMO 9239678. Add EISEKI to the Master's Mate Safety Initiative Network and share the water with a fleet that's paying attention — free.
Free forever · No credit card · for commercial operators
Eyes on EISEKI, 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 15, 2026
Position
34.6611° N, 135.4415° 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 EISEKI 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 EISEKI and switch it all on
Free to join · nothing to install to start · cancel anytime
About EISEKI
What kind of vessel is EISEKI?
EISEKI is a Tanker flagged to Japan.
Where was EISEKI last seen?
EISEKI was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is EISEKI's MMSI?
EISEKI's MMSI is 431501663. Call sign JL6604. IMO 9239678.
How big is EISEKI?
EISEKI is about 69 m long, 12 m on the beam, drawing 4.7 m.
Is EISEKI on the Master's Mate Safety Initiative Network?
Not yet. If EISEKI is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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