Boat slipway for mobile or fixed set-up

Mobile or fixed boat slipway apparatus, comprising a framework having means for supporting a boat, said framework supported for pivotal movement between a substantially horizontal position when a boat is supported thereby and an inclined position for facilitating the launching or landing a boat from the slipway into and out of the water, said framework mounted to be freely pivotable around a support shaft and including a slide mounted for telescopic movement in a longitudinal direction along the length of said framework, said telescopic slide having an outer end portion which is projectable outwardly from the framework, at least one buoyant element for supporting said end portion of said slide from the water, and means for selectively adjusting the buoyant force of said element so that said end portion of said slide may be submerged in the water when a boat is launched or taken out of the water, said slide including means supporting an undercarriage for a boat mounted to travel longitudinally along said framework in telescopic relation thereto, said undercarriage supported on said framework by means of at least two pairs of spaced apart flanged rollers for guiding said undercarriage against substantial lateral deflection with respect to said framework, said undercarriage and said framework including means for restraining said undercarriage against displacement normal and away from said framework during telescopic movement thereon.