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.
Vessel
Signet Lightning
MMSI 368549000 · Call sign WDH4885
Not yet on Master's MateFlag
USALength
40 m
Call sign
WDH4885
IMO
8969305
Official No.
1071569
AIS reports
5
Signet Lightning is an American vessel — 40 metres overall. On AIS she shows as MMSI 368549000, call sign WDH4885, IMO 8969305. Claim Signet Lightning free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Free forever · No credit card
Is Signet Lightning your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 16:49 UTC
Position
28.3865° N, 80.5569° W
Status
Under way (engine)
Speed
12.9 kn
Course
140°
Destination
XX XXX>US^0YVP
Crossing the Gulf of Mexico? 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Signet Lightning 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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
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.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Signet Lightning and switch it all on
Free to join · nothing to install to start · cancel anytime
About Signet Lightning
What kind of vessel is Signet Lightning?
Signet Lightning is a vessel flagged to United States of America.
Where was Signet Lightning last seen?
Signet Lightning was last reported in the Gulf of Mexico on public AIS.
What is Signet Lightning's MMSI?
Signet Lightning's MMSI is 368549000. Call sign WDH4885. IMO 8969305.
How big is Signet Lightning?
Signet Lightning is about 40 m long.
Is Signet Lightning on the Master's Mate Safety Initiative Network?
Not yet. If Signet Lightning is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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