HMS Poseidon (P99) was a Parthian-class submarine designed and...
wikipedia - 28 Jan 2022HMS Poseidon (P99) was a Parthian-class submarine designed and built by Vickers Shipbuilding and Engineering in Barrow-in-Furness for the Royal Navy, launched on 22 August 1929. She spent most of her short career assigned to the Yellow Sea region, based at the Royal Navy's base at Weihai, China. In 1931, the submarine sank after a collision with the steamship Yuta north of Weihai. The submarine was later secretly salvaged by the Chinese in 1972.
