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.
Passenger (Inspected)
Double Portion
MMSI 368016450 · Call sign WDJ8443
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
9.8 m
Beam
3.7 m
Draft
1.2 m
Call sign
WDJ8443
Official No.
1210251
Hull ID
MXB32596F606
AIS reports
1
On the American registry, Double Portion is a 9.8-metre passenger boat. She's built with a 3.7 m beam and a 1.2 m draft. Her registration reads MMSI 368016450, call sign WDJ8443. Double Portion can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard Double Portion safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Double Portion 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Double Portion on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Double Portion and switch it all on
Free to join · nothing to install to start · cancel anytime
About Double Portion
What kind of vessel is Double Portion?
Double Portion is a Passenger (Inspected) flagged to United States of America.
What is Double Portion's MMSI?
Double Portion's MMSI is 368016450. Call sign WDJ8443.
How big is Double Portion?
Double Portion is about 9.8 m long, 3.7 m on the beam, drawing 1.2 m.
Is Double Portion on the Master's Mate Safety Initiative Network?
Not yet. If Double Portion is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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