Surigao

a city in the Philippines, on the northeastern part of the island of Mindanao. Capital of the province of Surigao del Norte. Population, 30,000 (1970). Surigao is a port for the export of nickel ore. The Pan-Philippine Expressway passes through the city, which also has an airport. A trade and distribution center, Surigao processes abacá and has a handicrafts industry.

a strait in the Philippine Archipelago, connecting the Mindanao Sea with the Pacific Ocean. Surigao Strait is approximately 100 km long and has a minimum width of about 22 km. It is 25 to 54 m deep, with a maximum depth of 1,000 m in the southwest. The currents flow in a westerly or southwesterly direction, reaching a speed of 50 cm/sec. The port city of Surigao, on Mindanao Island, is situated on the strait.