was a J-class racing yacht that successfully defended the 1937 America's Cup, defeating the British challenger Endeavour II 4-0 at Newport, Rhode Island. It was the last time J-class yachts would race for the America's Cup. Harold Stirling Vanderbilt funded construction of Ranger, and she was launched on 11 May 1937. She was designed by Starling Burgess and Olin Stephens, and constructed by Bath Iron Works. Stephens would credit Burgess with actually designing Ranger, but the radical departure from the heavy displacement sailing yachts was attributed to Stephens himself who had first used the design in Dorade, winner of the 1931 Trans-Atlantic Race. Geerd Hendel, Burgess's chief draftsman, also had a hand in drawing many of the plans. The hull was all-steel welded by a shielded arc process with a weight-saving aluminum, arc-welded, mast counterbalanced with a 110-ton lead keel supported by an arc-welded steel keel plate.
Ranger Yachts today are considered classic and nearly antiques. Designed before the sport boat era, these sturdy craft were state-of-the-art production racers at the time.