Abstract: A boat cradle and loading device attached directly to a roof carrier with two laterally positioned parallel horizontal support members the device including two parallel side members aligned along the sides of the vehicle top, to each of which are attached right triangle support boat members which are positioned to form a "V" shaped cradle, one to the front and one to the back for the hull of the boat to rest and the keel of the boat to rest directly on at least one of the horizontal carrier support members with a roller intermediately disposed on the top of one side member positioned such that the keel of the boat may ride on the roller to allow the boat to be pushed onto the top of the cradle device while pushing on the rear of the boat with the keel riding on the roller until the boat center of gravity passes the roller at which time the boat end can be swung around and the boat drops in to the cradle.