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
Sandy Jack
MMSI 367576490 · Call sign WDG8341
Not yet on Master's MateType
Recreational
Flag
USALength
10.6 m
Beam
3.4 m
Draft
2.1 m
Call sign
WDG8341
Official No.
607893
AIS reports
1
An American family boat, Sandy Jack measures 10.6 metres. She's built with a 3.4 m beam and a 2.1 m draft. She broadcasts as MMSI 367576490, call sign WDG8341. Sandy Jack 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 Sandy Jack 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
Wherever Sandy Jack 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 recreational captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Sandy Jack 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 Sandy Jack and switch it all on
Free to join · nothing to install to start · cancel anytime
About Sandy Jack
What kind of vessel is Sandy Jack?
Sandy Jack is a Recreational flagged to United States of America.
What is Sandy Jack's MMSI?
Sandy Jack's MMSI is 367576490. Call sign WDG8341.
How big is Sandy Jack?
Sandy Jack is about 10.6 m long, 3.4 m on the beam, drawing 2.1 m.
Is Sandy Jack on the Master's Mate Safety Initiative Network?
Not yet. If Sandy Jack is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.