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
CHALLENGE PROSPECT 2
MMSI 636019534 · Call sign D5UY2
Not yet on Master's MateType
Tanker
Flag
LBRLength
183 m
Beam
32 m
Draft
10.5 m
Call sign
D5UY2
IMO
9788605
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
21
On the Liberian registry, CHALLENGE PROSPECT 2 is an 183-metre tanker. She's built with a beam of 32 m and a 10.5-metre draft. Her registration reads MMSI 636019534, call sign D5UY2, IMO 9788605. Bring CHALLENGE PROSPECT 2 aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for commercial operators
Eyes on CHALLENGE PROSPECT 2, 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
35.5267° N, 139.9395° E
Transiting the Sea of Japan? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put CHALLENGE PROSPECT 2 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 CHALLENGE PROSPECT 2 and switch it all on
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About CHALLENGE PROSPECT 2
What kind of vessel is CHALLENGE PROSPECT 2?
CHALLENGE PROSPECT 2 is a Tanker flagged to Liberia.
Where was CHALLENGE PROSPECT 2 last seen?
CHALLENGE PROSPECT 2 was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is CHALLENGE PROSPECT 2's MMSI?
CHALLENGE PROSPECT 2's MMSI is 636019534. Call sign D5UY2. IMO 9788605.
How big is CHALLENGE PROSPECT 2?
CHALLENGE PROSPECT 2 is about 183 m long, 32 m on the beam, drawing 10.5 m.
Is CHALLENGE PROSPECT 2 on the Master's Mate Safety Initiative Network?
Not yet. If CHALLENGE PROSPECT 2 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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