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
YM TOPMOST
MMSI 563246400 · Call sign 9VAJ6
Not yet on Master's MateType
Cargo
Flag
SGPLength
333 m
Beam
48 m
Draft
13.2 m
Call sign
9VAJ6
IMO
9878515
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
On the Singaporean registry, YM TOPMOST is a 333-metre merchant ship. Below, she has a beam of 48 m and a draft measuring 13.2 metres. She's listed under MMSI 563246400, call sign 9VAJ6, IMO 9878515. Join YM TOPMOST to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for commercial operators
Eyes on YM TOPMOST, 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
49.0214° N, 123.1494° W
Transiting the Salish 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 YM TOPMOST 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 YM TOPMOST and switch it all on
Free to join · nothing to install to start · cancel anytime
About YM TOPMOST
What kind of vessel is YM TOPMOST?
YM TOPMOST is a Cargo flagged to Singapore.
Where was YM TOPMOST last seen?
YM TOPMOST was last reported in the Salish Sea in Jun 2026 on public AIS.
What is YM TOPMOST's MMSI?
YM TOPMOST's MMSI is 563246400. Call sign 9VAJ6. IMO 9878515.
How big is YM TOPMOST?
YM TOPMOST is about 333 m long, 48 m on the beam, drawing 13.2 m.
Is YM TOPMOST on the Master's Mate Safety Initiative Network?
Not yet. If YM TOPMOST is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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