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)
St. Theodosius
MMSI 368066070 · Call sign WDK5563
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
25 m
Beam
8.8 m
Draft
2.6 m
Call sign
WDK5563
Official No.
1288252
Hull ID
AMI56C840218
AIS reports
1
St. Theodosius is an American 25-metre passenger ferry. She has a beam measuring 8.8 metres and a draft of 2.6 m. Her registration reads MMSI 368066070, call sign WDK5563. St. Theodosius belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard St. Theodosius 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 St. Theodosius 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 St. Theodosius 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 St. Theodosius and switch it all on
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About St. Theodosius
What kind of vessel is St. Theodosius?
St. Theodosius is a Passenger (Inspected) flagged to United States of America.
What is St. Theodosius's MMSI?
St. Theodosius's MMSI is 368066070. Call sign WDK5563.
How big is St. Theodosius?
St. Theodosius is about 25 m long, 8.8 m on the beam, drawing 2.6 m.
Is St. Theodosius on the Master's Mate Safety Initiative Network?
Not yet. If St. Theodosius is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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