An Admiralty Chart with a 1949 revision for Cowes Harbour and Yarmouth Harbour chart #2793.
Cowes Harbour Admiralty Chart #2793, 1972 revision
Admiralty NZ 6821 South Island South Coast Bluff Harbour And Entrance Charts Map
Vintage Boat Deck prism swivelling Skylight Vent Atkey and sons Cowes
