Hamworthy KSE has delivered the fourth of five Twin Asymmetric Monovec (TAM) rudder systems to Spanish shipbuilding group AESA Sestao. The rudders are being installed in shuttle tankers currently under construction for Norwegian owner Navion. The 140 000dwt ships, designed on the redundancy principle with completely independent port and starboard propulsion systems, represent the first application in shuttle tankers for innovative TAM rudder.
An optimisation of the proven Schilling Monovec, featuring twin rudders designed to operate with twin handed screws, the TAM offers a simple but effective route to improved safety and maneuverability, as well as economic gains through reduced lifetime costs. Hamworthy KSE worked closely with the shipyard and in model tank testing to quantify and balance the interacting control forces now available on each vessel. Optimisation model tests were carried out at Marin.
Highly successful sea trials have also proved the effectiveness of the TAM configuration, and the first of the five shuttle tankers Navion Britannia has been operational since April 1998.
More information: Hamworthy Marine Limited