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
SM CHALLENGER
MMSI 538007528 · Call sign V7TJ5
Not yet on Master's MateType
Cargo
Flag
MHLLength
230 m
Beam
38 m
Draft
7.4 m
Call sign
V7TJ5
IMO
9574418
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
20
SM CHALLENGER is a Marshall Islands cargo carrier — 230 metres overall. She's built with 38 metres in the beam and a 7.4-metre draft. Officially she's MMSI 538007528, call sign V7TJ5, IMO 9574418. Sign SM CHALLENGER up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for commercial operators
Eyes on SM CHALLENGER, 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 2, 2026
Position
32.8801° S, 151.7501° 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 SM CHALLENGER 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 SM CHALLENGER and switch it all on
Free to join · nothing to install to start · cancel anytime
About SM CHALLENGER
What kind of vessel is SM CHALLENGER?
SM CHALLENGER is a Cargo flagged to Marshall Islands.
Where was SM CHALLENGER last seen?
SM CHALLENGER was last reported in the Tasman Sea in Jun 2026 on public AIS.
What is SM CHALLENGER's MMSI?
SM CHALLENGER's MMSI is 538007528. Call sign V7TJ5. IMO 9574418.
How big is SM CHALLENGER?
SM CHALLENGER is about 230 m long, 38 m on the beam, drawing 7.4 m.
Is SM CHALLENGER on the Master's Mate Safety Initiative Network?
Not yet. If SM CHALLENGER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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