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.
Towing Vessel
MISTER MAC
MMSI 367661820 · Call sign WDH8821
Not yet on Master's MateType
Towing Vessel
Flag
USALength
22.3 m
Beam
9.1 m
Draft
3.4 m
Call sign
WDH8821
Official No.
1328802
Hull ID
NTLEX224D222
AIS reports
1
MISTER MAC is an American 22.3-metre working craft. Below, she has a beam of 9.1 m and a draft of 3.4 m. She broadcasts as MMSI 367661820, call sign WDH8821. MISTER MAC is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for working boats
Built for boats that work — like MISTER MAC.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever MISTER MAC 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put MISTER MAC on the map. It hands you the full bridge:
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.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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 MISTER MAC and switch it all on
Free to join · nothing to install to start · cancel anytime
About MISTER MAC
What kind of vessel is MISTER MAC?
MISTER MAC is a Towing Vessel flagged to United States of America.
What is MISTER MAC's MMSI?
MISTER MAC's MMSI is 367661820. Call sign WDH8821.
How big is MISTER MAC?
MISTER MAC is about 22.3 m long, 9.1 m on the beam, drawing 3.4 m.
Is MISTER MAC on the Master's Mate Safety Initiative Network?
Not yet. If MISTER MAC is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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