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.
Sailing
HIGH TENSION
MMSI 232017867 · Call sign MSXW4
Not yet on Master's MateType
Sailing
Flag
GBRLength
108 m
Beam
10 m
Call sign
MSXW4
First reported
Apr 2026
Last reported
Apr 2026
AIS reports
85
A British cruising sailboat, HIGH TENSION measures 108 metres. HIGH TENSION has a beam of 10 m. Her registration reads MMSI 232017867, call sign MSXW4. Add HIGH TENSION to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Free forever · No credit card · for cruisers
Sleep easy on the hook aboard HIGH TENSION.
GPS-precise anchor-drag alarms, ETA-calibrated weather routing, worldwide charts, and cruisers watching each other’s backs.
Set her anchor watch — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Apr 22, 2026
Position
17.0155° N, 61.7733° W
Sailing the Caribbean? 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 cruisers
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put HIGH TENSION 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.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
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.
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.
Claim HIGH TENSION and switch it all on
Free to join · nothing to install to start · cancel anytime
About HIGH TENSION
What kind of vessel is HIGH TENSION?
HIGH TENSION is a Sailing flagged to United Kingdom.
Where was HIGH TENSION last seen?
HIGH TENSION was last reported in the Caribbean in Apr 2026 on public AIS.
What is HIGH TENSION's MMSI?
HIGH TENSION's MMSI is 232017867. Call sign MSXW4.
How big is HIGH TENSION?
HIGH TENSION is about 108 m long, 10 m on the beam.
Is HIGH TENSION on the Master's Mate Safety Initiative Network?
Not yet. If HIGH TENSION is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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