VAN DER VELDEN® FLEX TUNNEL
Van der Velden Marine Systems has introduced an innovative new retractable tunnel, the Van der Velden® FLEX Tunnel, specially developed for inland vessels.
Tunnels are commonly used on inland ships, ensuring an optimal water flow to the propellers at shallow drafts. The downside of conventional tunnels is an increase in hull resistance, a lower efficiency and consequently extra fuel consumption. Moreover, loaded inland ships sail in deeper water conditions for about 85 percent of the time, during which a tunnel is superfluous.
Van der Velden® DOLPHIN XR
The Van der Velden® FLEX Tunnel is developed to be combined and integrated with the Van der Velden® DOLPHIN XR rudder and spoiler . This complete package ensures optimal efficiency and thus considerable fuel saving.