Jost Van Dyke is the smallest of the four main islands of the British Virgin Islands, measuring roughly 8 square kilometres. It rests in the northern portion of the archipelago of the Virgin Islands, located in the Atlantic Ocean and Caribbean Sea. Jost Van Dyke lies about 8 km to the northwest of Tortola and 8 km to the north of Saint John, U.S. Virgin I…Jost Van Dyke is the smallest of the four main islands of the British Virgin Islands, measuring roughly 8 square kilometres. It rests in the northern portion of the archipelago of the Virgin Islands, located in the Atlantic Ocean and Caribbean Sea. Jost Van Dyke lies about 8 km to the northwest of Tortola and 8 km to the north of Saint John, U.S. Virgin Islands. Little Jost Van Dyke lies off its eastern end.