J Class Yachts are a type of sailing yacht that originated in the 1930s, specifically designed for the America's Cup races. These yachts are known for their elegant lines, large sails, and impressive performance on the water. The "J" in their name refers to the measurement rule that governs their size and design. The J Class yachts are typically between 75 and 130 feet long and feature a classic aesthetic with wooden hulls and intricate rigging. Although they fell out of favor after World War II, a revival in recent years has seen new J Class yachts built, allowing enthusiasts to appreciate their beauty and sailing prowess once again.