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
SWALLOW ACE
MMSI 431839000 · Call sign 7KNF
Not yet on Master's MateType
Cargo
Flag
JPNLength
199 m
Beam
32 m
Draft
9.2 m
Call sign
7KNF
IMO
9338620
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
17
A Japanese merchant ship, SWALLOW ACE measures 199 metres. Below, she has a 32 m beam and a draft measuring 9.2 metres. Find her under MMSI 431839000, call sign 7KNF, IMO 9338620. SWALLOW ACE is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for commercial operators
Eyes on SWALLOW ACE, 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
38.3593° N, 142.0384° E
Wherever SWALLOW ACE 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 SWALLOW ACE 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 SWALLOW ACE and switch it all on
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About SWALLOW ACE
What kind of vessel is SWALLOW ACE?
SWALLOW ACE is a Cargo flagged to Japan.
Where was SWALLOW ACE last seen?
SWALLOW ACE was last reported in around 38°N 142°E in Jun 2026 on public AIS.
What is SWALLOW ACE's MMSI?
SWALLOW ACE's MMSI is 431839000. Call sign 7KNF. IMO 9338620.
How big is SWALLOW ACE?
SWALLOW ACE is about 199 m long, 32 m on the beam, drawing 9.2 m.
Is SWALLOW ACE on the Master's Mate Safety Initiative Network?
Not yet. If SWALLOW ACE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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