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
Divide by Zero
MMSI 368023180 · Call sign WDJ9149
Not yet on Master's MateType
Recreational
Flag
USALength
13.7 m
Beam
4.3 m
Draft
2.5 m
Call sign
WDJ9149
Official No.
963137
Hull ID
CIR45007F090
AIS reports
1
On the American registry, Divide by Zero is a 13.7-metre cruising boat. She's built with a beam measuring 4.3 metres and a 2.5-metre draft. Her papers read MMSI 368023180, call sign WDJ9149. Claim Divide by Zero free and let the Master's Mate Safety Initiative Network keep an eye on her, on the water or off.
Free forever · No credit card · for recreational captains
Keep Divide by Zero 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 Divide by Zero 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 Divide by Zero 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 Divide by Zero and switch it all on
Free to join · nothing to install to start · cancel anytime
About Divide by Zero
What kind of vessel is Divide by Zero?
Divide by Zero is a Recreational flagged to United States of America.
What is Divide by Zero's MMSI?
Divide by Zero's MMSI is 368023180. Call sign WDJ9149.
How big is Divide by Zero?
Divide by Zero is about 13.7 m long, 4.3 m on the beam, drawing 2.5 m.
Is Divide by Zero on the Master's Mate Safety Initiative Network?
Not yet. If Divide by Zero is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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