Scale: 1:48. Plan showing the inboard profile, upper deck, and lower deck for Zephyr (1823) and Tyrian (1826), 10 gun Brig/Brig Sloops, completed as Packets. According to the annotations dated 14 July to 29 August 1823, copies of this plan were also sent for the rest of the Cadmus/Cherokee/Rolla class ordered in 1823 to be built in the Royal Dockyards (originally about 44 vessels).