HMVS Nepean

HMVS Nepean was a second-class torpedo boat constructed for the Victorian Naval Forces and later operated by the Commonwealth Naval Forces and the Royal Australian Navy. She was sunk on mud flats on Swan Island in Port Phillip Bay in 1912 after being stripped of equipment and machinery.

Design and construction
Nepean was one of several torpedo boats ordered by the government of Victoria in 1882 to protect the colony from a possible Russian or French attack, and was built by John I. Thornycroft & Company, Chiswick.

Nepean was 67 ft long, with a draught of 3.25 ft, and a displacement of 12.5 tons. She was designed with a low freeboard, to minimise her profile. The boat had a maximum speed of 17 kn, which she would use to close rapidly with enemy vessels before attacking.

Fate
She was sunk on mud flats on Swan Island in Port Phillip Bay in 1912 after being stripped of equipment and machinery.