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.
Recreational
Sima
MMSI 367416660 · Call sign WDE9390
Not yet on Master's MateType
Recreational
Flag
USALength
25.2 m
Beam
6.3 m
Draft
3.5 m
Call sign
WDE9390
Official No.
1221059
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
4
Sima is an American 25.2-metre cruising boat. She carries a 6.3 m beam and a 3.5-metre draft. On AIS she shows as MMSI 367416660, call sign WDE9390. Sima belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
Free forever · No credit card · for recreational captains
Keep Sima looked after — even when you’re not aboard.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
40.7557° N, 74.0165° W
Cruising off the U.S. East Coast? 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 recreational captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Sima on the map. It hands you the full bridge:
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.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Sima and switch it all on
Free to join · nothing to install to start · cancel anytime
About Sima
What kind of vessel is Sima?
Sima is a Recreational flagged to United States of America.
Where was Sima last seen?
Sima was last reported in off the U.S. East Coast in Jun 2026 on public AIS.
What is Sima's MMSI?
Sima's MMSI is 367416660. Call sign WDE9390.
How big is Sima?
Sima is about 25.2 m long, 6.3 m on the beam, drawing 3.5 m.
Is Sima on the Master's Mate Safety Initiative Network?
Not yet. If Sima is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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