Abstract: A spring loaded tiedown apparatus for boats, campers and other cargo, particularly when transporting same upon a trailer or atop a motor vehicle. This tiedown apparatus is comprised of a strap portion which is attached to the sides of a trailer or other motor vehicle by fastening means such as hooks. The strap portion has buckle means of adjusting the length of the apparatus to fit various sizes of cargo. An enclosed spring-loaded mechanism is also provided which maintains the same tension on the cargo throughout transport. In one preferred embodiment, the spring mechanism consists of two interconnected concentric covers which expand in or out of each other as the spring is extended or depressed. Other embodiments show the spring mechanism with one enclosure or without any covers. By being enclosed, the spring mechanism does not scratch or damage the cargo.