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.
Freight Ship
SL MIDWAY
MMSI 368398460 · Call sign WDP9343
Not yet on Master's MateType
Freight Ship
Flag
USALength
131.8 m
Beam
21.4 m
Draft
11 m
Call sign
WDP9343
IMO
9685097
Official No.
1352659
AIS reports
1
An American merchant ship, SL MIDWAY measures 131.8 metres. Her hull carries a beam measuring 21.4 metres and a draft measuring 11 metres. Officially she's MMSI 368398460, call sign WDP9343, IMO 9685097. SL MIDWAY is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
Free forever · No credit card · for commercial operators
Eyes on SL MIDWAY, 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
Wherever SL MIDWAY 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 SL MIDWAY 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 SL MIDWAY and switch it all on
Free to join · nothing to install to start · cancel anytime
About SL MIDWAY
What kind of vessel is SL MIDWAY?
SL MIDWAY is a Freight Ship flagged to United States of America.
What is SL MIDWAY's MMSI?
SL MIDWAY's MMSI is 368398460. Call sign WDP9343. IMO 9685097.
How big is SL MIDWAY?
SL MIDWAY is about 131.8 m long, 21.4 m on the beam, drawing 11 m.
Is SL MIDWAY on the Master's Mate Safety Initiative Network?
Not yet. If SL MIDWAY is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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