▁ ▁Not ting ham ▁ 6 0 ▁( 1 7 1 9 ) ▁– ▁re built ▁ 1 7 4 5 ▁ ▁Four th ▁rates ▁of ▁ 5 0 ▁guns ▁The ▁first ▁nin ete en ▁of ▁the ▁following ▁vessels ▁were ▁ordered ▁between ▁ 1 7 0 6 ▁and ▁ 1 7 1 4 ▁as ▁ 5 4 - gun ▁vessels , ▁armed ▁under ▁the ▁ 1 7 0 3 ▁G uns ▁Est ab lish ment ▁with ▁a ▁main ▁battery ▁of ▁ 1 2 - p ound er ▁guns . ▁Under ▁the ▁ 1 7 1 6 ▁G uns ▁Est ab lish ment , ▁the ▁ 5 4 - gun ▁ship ▁was ▁su pers eded ▁by ▁a ▁ 5 0 - gun ▁ship ▁with ▁a ▁main ▁battery ▁of ▁ 1 8 - p ound er ▁guns . ▁The ▁last ▁ten ▁ships ▁listed ▁below ▁were ▁ordered ▁from ▁ 1 7 1 5 ▁on ward ▁which ▁were ▁established ▁and ▁armed ▁to ▁the ▁ 1 7 1 6 ▁G uns ▁Est ab lish ment , ▁and ▁the ▁existing ▁ 5 4 - gun ▁ships ▁were ▁re - ar med ▁to ▁this ▁standard ▁as ▁each ▁came ▁into ▁a ▁dock yard ▁for ▁ref itting ▁and ▁opportunity ▁allowed . ▁ ▁Sal is bury ▁ 5 0 ▁( 1 7 0 7 ) ▁– ▁re built ▁ 1 7 1 7 ▁ ▁Dragon ▁ 5 0 ▁( 1 7 0 7 ) ▁– ▁w reck ed ▁ 1 7 1 2 ▁ ▁Fal mouth ▁ 5 0 ▁( 1 7 0