MV Manly was a Supramar PT20 type hydrofoil ferry which operated on Sydney Harbour from 1965 to 1980.

[1] After larger hydrofoils were delivered, in 1973 Manly operated a new service between Circular Quay and Gladesville.

This service was withdrawn after only 6 months due to excessive noise when operating on the Parramatta River and the lack of backup vessel.

Manly was sold to Hydrofoil Seaflight Services Pty Ltd in Queensland and renamed Enterprise for use between Rosslyn Bay and Great Keppel Island.

The new owner removed the foils and engine, and the hull was laid up in Rosslyn Bay for several years.