Scale: 1:48. A draught descriptive of the proposed conversion of 46 gun frigates of the Hebe class into steam ships for engines of 400HP, showing the sheer, with figurehead, body plan and longitudinal half breadth of the proposed conversion of Penelope (1829), a modified Leda (Hebe) class 46-gun frigate converted to a steam vessel (SV1), later a First Class paddle frigate, from 1842 to 1843.