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Wave impact monitoring: how to reduce repeated high impacts

  • Writer: Jason Purvey
    Jason Purvey
  • Mar 24
  • 2 min read
Lifeboat in Heavy Sea
Lifeboat in Heavy Sea

Wave impact monitoring is not about collecting data for the sake of it. It is about reducing repeated high-severity shocks that drive fatigue, injury risk, and premature wear on high-speed craft.


Most operators already know when a run felt rough. What is usually missing is an objective record that lets you answer three practical questions:

1. Where did the worst impacts happen

2. What was the vessel doing at the time

3. What change reduced the severity on the next run


Wave Guardian is designed to make that feedback loop simple. It gives helmsmen real-time alerts and gives managers a consistent evidence trail for WBV controls and post-run review.


What to measure firstStart with a minimum set that you can trust and explain.

• Time-synchronised position and speed

• Peak impact events and event rate, so you can track “how often” and “how bad”

• Route context: heading, sea state notes, load, and the operational task


How to turn data into fewer hits: Treat impact data like any other operational metric.

• Baseline your regular routes over two weeks, then compare like-for-like

• Coach to outcomes: fewer severe events per hour, not “slow down”

• Change one variable at a time: speed band, heading, trim, load placement, or run timing

• Log the improvement so you do not lose it when crews rotate


Where this supports compliance and duty of care

MGN 436 is clear on the problem it is trying to solve: severe and repeated shocks on small vessels. Monitoring helps you demonstrate that you identified the risk, you control it, and you review it. That matters after an incident, and it matters when you are asked what you changed and why.


If you want to start with one practical step next week, pick one route, agree a “red event” threshold, and make the after-action review a ten-minute habit. This is where operators see real change.


Recommended system route

• Fit Wave Guardian as the always-on impact gauge for the helm

• Use BRNKL for time-synchronised trip recording when you also need CCTV and NMEA 2000 context


Next steps

If you want a quick fit and use-case check, book a short demo and we will recommend the simplest system set that meets your duty-of-care and evidence needs.


• Contact / demo request: https://www.missiondynamics.co.uk/contact


Internal links:


External references:

• HSE WBV resources and calculator: https://www.hse.gov.uk/vibration/wbv/resources.htm

• HSE L141 Whole-body vibration guidance: https://www.hse.gov.uk/pubns/books/l141.htm

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