Kat O, also named Crooked Island, is an island in northeast Hong Kong. Administratively, Kat O is part of North District. It is a recognized village under the New Territories Small House Policy. Kat O is located in the west of Mirs Bay. With an area of 2.35 km², it is the largest island in North District, the second largest being Wong Wan Chau. Neighbouring isla…Kat O, also named Crooked Island, is an island in northeast Hong Kong. Administratively, Kat O is part of North District. It is a recognized village under the New Territories Small House Policy. Kat O is located in the west of Mirs Bay. With an area of 2.35 km², it is the largest island in North District, the second largest being Wong Wan Chau. Neighbouring islands include Ap Chau, Ngo Mei Chau, and Pak Sha Chau. The village of Tung O is located on its northwest coast. Its highest point is Kai Kung Leng, which is 122 m above sea level.