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
On The Double
MMSI 367559680 · Call sign WDG6693
Not yet on Master's MateType
Recreational
Flag
USALength
11.9 m
Beam
3.7 m
Draft
2 m
Call sign
WDG6693
Official No.
1156546
AIS reports
1
On The Double is an American weekend cruiser, 11.9 metres LOA. Her hull carries a beam measuring 3.7 metres and a draft of 2 m. On AIS she shows as MMSI 367559680, call sign WDG6693. On The Double is exactly the kind of boat the Master's Mate Safety Initiative Network was built for — free, simple, and always on watch.
Free forever · No credit card · for recreational captains
Keep On The Double 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 On The Double 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 On The Double 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 On The Double and switch it all on
Free to join · nothing to install to start · cancel anytime
About On The Double
What kind of vessel is On The Double?
On The Double is a Recreational flagged to United States of America.
What is On The Double's MMSI?
On The Double's MMSI is 367559680. Call sign WDG6693.
How big is On The Double?
On The Double is about 11.9 m long, 3.7 m on the beam, drawing 2 m.
Is On The Double on the Master's Mate Safety Initiative Network?
Not yet. If On The Double is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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