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.
Other
CORYSTES
MMSI 233558000 · Call sign GHRU
Not yet on Master's MateType
Other
Flag
GBRLength
53 m
Beam
12 m
Draft
5.2 m
Call sign
GHRU
IMO
8501517
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
CORYSTES is a British 53-metre craft. CORYSTES has 12 metres in the beam and a 5.2 m draft. Officially she's MMSI 233558000, call sign GHRU, IMO 8501517. CORYSTES can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card
Is CORYSTES your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 10:33 UTC
Position
54.6123° N, 5.9188° W
Status
Moored
Speed
0.0 kn
Course
210°
Destination
BELFAST
ETA
06-07 06:00 UTC
Crossing the Irish Sea? 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put CORYSTES 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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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 CORYSTES and switch it all on
Free to join · nothing to install to start · cancel anytime
About CORYSTES
What kind of vessel is CORYSTES?
CORYSTES is a Other flagged to United Kingdom.
Where was CORYSTES last seen?
CORYSTES was last reported in the Irish Sea in Jun 2026 on public AIS.
What is CORYSTES's MMSI?
CORYSTES's MMSI is 233558000. Call sign GHRU. IMO 8501517.
How big is CORYSTES?
CORYSTES is about 53 m long, 12 m on the beam, drawing 5.2 m.
Is CORYSTES on the Master's Mate Safety Initiative Network?
Not yet. If CORYSTES 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.