PS Shanklin was a passenger vessel built for the Southern Railway in 1924 for use on the Portsmouth Harbour to Ryde Pier route.

[1] The ship was built by John I. Thornycroft & Company of Southampton and launched in 1924.

She was fitted with first and second class passenger saloons heated and ventilated by the inductor thermotank system.

The saloon had upholstered seating and the floor was covered with Ruboleum tiling.

She operated the passenger service from Portsmouth Harbour to Ryde Pier with her first trip being on 3 October 1924.