i-Thrust - Tunnels
Manufactured in GRP, protected by a fiberglass mat providing a smooth, installation friendly outer surface.
Delivered with an inner diameter of 4 5/16’’ - 6 5/6’’ - 7 1/4’’ or 9 13/16’’.
No Notable Speed Reduction
A tunnel installation, which has been carried out properly, will not produce any notable reduction in speed. It maintains a low noise level and provides optimal effect. It will also serve a function to reinforce the bow and hull. The very best performance is achieved when the passage between hull and tunnel is rounded off with a radius corresponding to 10 percent of the tunnel diameter.