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
Derek John Jr
MMSI 368066860 · Call sign WDK5643
Not yet on Master's MateFlag
USACall sign
WDK5643
Official No.
1214706
AIS reports
1
Derek John Jr flies the American flag — a craft. She's listed under MMSI 368066860, call sign WDK5643. There's a place for Derek John Jr on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Free forever · No credit card
Is Derek John Jr 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
Wherever Derek John Jr 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Derek John Jr 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 Derek John Jr and switch it all on
Free to join · nothing to install to start · cancel anytime
About Derek John Jr
What kind of vessel is Derek John Jr?
Derek John Jr is a vessel flagged to United States of America.
What is Derek John Jr's MMSI?
Derek John Jr's MMSI is 368066860. Call sign WDK5643.
Is Derek John Jr on the Master's Mate Safety Initiative Network?
Not yet. If Derek John Jr is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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