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.
Tanker
ALTUM SIDUS
MMSI 538005654 · Call sign V7FS7
Not yet on Master's MateType
Tanker
Flag
MHLLength
183 m
Beam
32 m
Draft
6.4 m
Call sign
V7FS7
IMO
9458822
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
87
Registered in the Marshall Islands, ALTUM SIDUS is an 183-metre tanker. Her hull carries a 32 m beam and a draft measuring 6.4 metres. On AIS she shows as MMSI 538005654, call sign V7FS7, IMO 9458822. Put ALTUM SIDUS on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for commercial operators
Eyes on ALTUM SIDUS, 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
Live AIS position · Jun 9, 2026 03:23 UTC
Position
55.7234° N, 21.1013° E
Status
Moored
Speed
0.0 kn
Course
336°
Transiting the Baltic Sea? You're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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Joining the Safety Initiative Network doesn't just put ALTUM SIDUS 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 ALTUM SIDUS and switch it all on
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About ALTUM SIDUS
What kind of vessel is ALTUM SIDUS?
ALTUM SIDUS is a Tanker flagged to Marshall Islands.
Where was ALTUM SIDUS last seen?
ALTUM SIDUS was last reported in the Baltic Sea in Jun 2026 on public AIS.
What is ALTUM SIDUS's MMSI?
ALTUM SIDUS's MMSI is 538005654. Call sign V7FS7. IMO 9458822.
How big is ALTUM SIDUS?
ALTUM SIDUS is about 183 m long, 32 m on the beam, drawing 6.4 m.
Is ALTUM SIDUS on the Master's Mate Safety Initiative Network?
Not yet. If ALTUM SIDUS is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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