8 6 1 ▁ ▁Union ▁ 9 8 ▁( 1 8 1 1 ) ▁– ▁broken ▁up ▁ 1 8 3 3 ▁ ▁Second ▁rates ▁of ▁ 9 0 / 9 2 ▁guns ▁( two - deck ers ) ▁ ▁Rod ney ▁class ▁( Se ppings ) ▁ ▁Rod ney ▁ 9 2 ▁( 1 8 3 3 ) ▁– ▁converted ▁to ▁sc rew ▁ 1 8 6 0 , ▁broken ▁up ▁ 1 8 8 2 ▁ ▁N ile ▁ 9 2 ▁( 1 8 3 9 ) ▁– ▁converted ▁to ▁sc rew ▁ 1 8 5 4 , ▁destroyed ▁by ▁fire ▁ 1 9 5 6 ▁ ▁London ▁ 9 2 ▁( 1 8 4 0 ) ▁– ▁converted ▁to ▁sc rew ▁ 1 8 5 8 , ▁sold ▁ 1 8 8 4 ▁ ▁Second ▁rates ▁of ▁ 8 4 ▁guns ▁( two - deck ers ) ▁ ▁Form id able ▁class ▁( Se ppings ) ▁– ▁lines ▁of ▁the ▁ ▁Can opus ▁ ▁( ex - F rench ▁Franklin , ▁captured ▁at ▁the ▁Battle ▁of ▁the ▁N ile ▁in ▁ 1 7 9 8 ), ▁but ▁struct ur ally ▁different ; ▁although ▁Can opus ▁was ▁not ▁considered ▁a ▁member ▁of ▁the ▁class , ▁the ▁class ▁are ▁often ▁known ▁as ▁the ▁' Can opus ▁class '. ▁ ▁Form id able ▁ 8 4 ▁( 1 8 2 5 ) ▁– ▁sold ▁ 1 9 0 6 ▁ ▁Mod ified ▁Form id able ▁class ▁built ▁in ▁te ak ▁in ▁India ▁