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
ASTRANTIA
MMSI 431996000 · Call sign 7KDY
Not yet on Master's MateType
Cargo
Flag
JPNLength
210 m
Beam
36 m
Draft
10.5 m
Call sign
7KDY
IMO
9477945
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
66
ASTRANTIA is a Japanese 210-metre freighter. Below, she has a beam measuring 36 metres and a draft of 10.5 m. Officially she's MMSI 431996000, call sign 7KDY, IMO 9477945. There's a place for ASTRANTIA on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Free forever · No credit card · for commercial operators
Eyes on ASTRANTIA, 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
34.7290° S, 57.8155° W
Wherever ASTRANTIA roams, 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 ASTRANTIA 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 ASTRANTIA and switch it all on
Free to join · nothing to install to start · cancel anytime
About ASTRANTIA
What kind of vessel is ASTRANTIA?
ASTRANTIA is a Cargo flagged to Japan.
Where was ASTRANTIA last seen?
ASTRANTIA was last reported in around 35°S 58°W in Jun 2026 on public AIS.
What is ASTRANTIA's MMSI?
ASTRANTIA's MMSI is 431996000. Call sign 7KDY. IMO 9477945.
How big is ASTRANTIA?
ASTRANTIA is about 210 m long, 36 m on the beam, drawing 10.5 m.
Is ASTRANTIA on the Master's Mate Safety Initiative Network?
Not yet. If ASTRANTIA 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.