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
NSU KEYSTONE
MMSI 431977000 · Call sign 7KBP
Not yet on Master's MateType
Cargo
Flag
JPNLength
300 m
Beam
50 m
Draft
9.3 m
Call sign
7KBP
IMO
9641883
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
NSU KEYSTONE flies the Japanese flag — a 300-metre general cargo ship. Her hull carries a beam measuring 50 metres and a draft measuring 9.3 metres. On AIS she appears as MMSI 431977000, call sign 7KBP, IMO 9641883. NSU KEYSTONE is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
Free forever · No credit card · for commercial operators
Eyes on NSU KEYSTONE, 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 4, 2026
Position
32.8877° S, 151.7669° E
Transiting the Tasman Sea? 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 NSU KEYSTONE 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 NSU KEYSTONE and switch it all on
Free to join · nothing to install to start · cancel anytime
About NSU KEYSTONE
What kind of vessel is NSU KEYSTONE?
NSU KEYSTONE is a Cargo flagged to Japan.
Where was NSU KEYSTONE last seen?
NSU KEYSTONE was last reported in the Tasman Sea in Jun 2026 on public AIS.
What is NSU KEYSTONE's MMSI?
NSU KEYSTONE's MMSI is 431977000. Call sign 7KBP. IMO 9641883.
How big is NSU KEYSTONE?
NSU KEYSTONE is about 300 m long, 50 m on the beam, drawing 9.3 m.
Is NSU KEYSTONE on the Master's Mate Safety Initiative Network?
Not yet. If NSU KEYSTONE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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