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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.
Other

SIRIUS

Other · last seen 34°N 135°E · Jun 2026 · MMSI 431000347 · Call sign JD2507

Not yet on Master's Mate
Type
Other
Length
38 m
Beam
6 m
Draft
2.1 m
Call sign
JD2507
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
13

SIRIUS is a vessel, 38 metres from stem to stern. She's built with a beam measuring 6 metres and a 2.1-metre draft. On the registers she's MMSI 431000347, call sign JD2507. There's a place for SIRIUS on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.

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Live AIS position · Jun 15, 2026 15:27 UTC
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Position
34.2097° N, 134.9854° E
Status
Under way (engine)
Speed
14.3 kn
Course
355°
Destination
>JP TOMOGASHIMA
ETA
06-16 00:15 UTC
Crossing the Sea of Japan? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put SIRIUS 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.
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About SIRIUS

What kind of vessel is SIRIUS?
SIRIUS is a Other.
Where was SIRIUS last seen?
SIRIUS was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is SIRIUS's MMSI?
SIRIUS's MMSI is 431000347. Call sign JD2507.
How big is SIRIUS?
SIRIUS is about 38 m long, 6 m on the beam, drawing 2.1 m.
Is SIRIUS on the Master's Mate Safety Initiative Network?
Not yet. If SIRIUS is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).

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