Further thoughts. 

A major consideration for any wave power installation is its survivability.  In the proposed field each pump floats with a low centre of gravity, is partially submerged and acts as its own shock absorber.  It works against a support pipe that is not fixed, but possesses high inertia and rides across the prevailing swell or waves to keep each pump facing into the weather.  Sections can be made ‘farmable’, ie, may be removed via a quick release system for section connector, down feed and row linkage arm for servicing ashore, or in advance of a forecast major storm.  Turbines are ashore for survivability and ease of maintenance. The pump field has low surface exposure and with discreet shore works would have minimal environmental impact.  A system leak would not result in contamination, and field position may have a favourable effect on coastal erosion.  The pump field is low tech, of predominantly modern plastics construction, and is recyclable. 

This web site details improvements on a submission to the Centre For Alternative Technology, October 2002.  The concept is proven, though further research is required regarding volumetric output from multi-cylinder pumps at the required head height, and the appropriate mix with other point absorber devices.  

Trial pumps were modelled by Bridge of Brown Crafts, Tel. (01343) 830452. 

The author’s age, fitness and wallet does not allow the luxury of further research.  He hopes that the information and ideas outlined here will inspire others, and will perhaps hasten the day when useful power is fed ashore from the sea. 

Andrew Trotman.  

October 2007.