Profile: Stay Tensioner Services Ltd. designs and manufactures hydraulic tensioners for tightening rigging on sailboats. Our tension rams are made from marine grade aluminum and have stainless steel rods & clevis pins. All the aluminum parts are anodized for decoration, corrosion resistance and maximum wear resistance in the bore. The cylinder tubes are painted with marine grade polyurethane finish. STS captive sheet handling winch has been developed to ease sail handling on the modern sail boat. The very compact size and the nature of operation of these units lends itself to installation below decks or in a lazaret, enabling a very clear deck space to be left for the comfort of the passengers. The winch is purpose designed for the marine environment and constructed mainly from aluminum and stainless steel with the power & braking units being immersed in oil to prevent any corrosion problems.