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.
Offshore Supply Vessel
C Atlantis
MMSI 338728000 · Call sign WDP4142
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
57 m
Beam
13.4 m
Draft
5.8 m
Call sign
WDP4142
IMO
9232723
Official No.
1093195
AIS reports
4
C Atlantis is a working craft listed on the the United States registry, 57 metres LOA. She has 13.4 metres in the beam and a draft of 5.8 m. On AIS she shows as MMSI 338728000, call sign WDP4142, IMO 9232723. Claim C Atlantis free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Free forever · No credit card · for working boats
Built for boats that work — like C Atlantis.
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 C Atlantis 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 C Atlantis 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 C Atlantis and switch it all on
Free to join · nothing to install to start · cancel anytime
About C Atlantis
What kind of vessel is C Atlantis?
C Atlantis is a Offshore Supply Vessel flagged to United States of America.
What is C Atlantis's MMSI?
C Atlantis's MMSI is 338728000. Call sign WDP4142. IMO 9232723.
How big is C Atlantis?
C Atlantis is about 57 m long, 13.4 m on the beam, drawing 5.8 m.
Is C Atlantis on the Master's Mate Safety Initiative Network?
Not yet. If C Atlantis 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.