The "Salvor" caprail is curved to fairlead and prevent chafing of the towing hawser. The "Grapple's" caprail is curved to fairlead and prevent chafing of the towing hawser. The "Grasp's" caprail is curved to fairlead and prevent chafing of the towing hawser. The "Safeguard's" caprail is curved to fairlead and prevent chafing of the towing hawser. Typically a fairlead will be a ring or hook. For larger angles a block or pulley is used as a fairlead to reduce friction.