Manchester State Park is a 111-acre (45 ha) state park with 3,400 feet (1,000 m) of Shoreline
, located on Washington
's Kitsap Peninsula. It was at one time a harbor defense installation for the protection of nearby Bremerton
, then a fuel supply depot and Navy fire-fighting station. The park contains a former torpedo warehouse built in 1901, a mining casement and a gun battery.