▁line ▁of ▁battle . ▁They ▁were ▁inform ally ▁described ▁as ▁fr ig ates ▁and ▁are ▁included ▁in ▁the ▁article ▁on ▁that ▁topic . ▁ ▁List ▁of ▁ships - of - the - line ▁of ▁the ▁Royal ▁Navy ▁( 1 7 4 1 – 5 5 ) ▁Number ▁of ▁main ▁guns ▁follows ▁name ▁( see ▁rating ▁system ▁of ▁the ▁Royal ▁Navy ) ▁Ex cept ▁where ▁stated ▁otherwise , ▁these ▁ships ▁are ▁listed ▁in ▁the ▁order ▁of ▁pp . ▁ 1 7 1 - 1 7 5 ▁The ▁Sh ip ▁of ▁the ▁Line ▁Volume ▁I , ▁by ▁Brian ▁La very , ▁pub ▁Con ways , ▁ 1 9 8 3 , ▁▁ 1 7 4 1 ▁propos als ▁ ▁First ▁rates ▁of ▁ 1 0 0 ▁guns ▁None ▁built ▁ ▁Second ▁rates ▁of ▁ 9 0 ▁guns ▁ ▁Ram ill ies ▁ 9 0 ▁( 1 7 4 9 ) ▁– ▁w reck ed ▁ 1 7 6 0 ▁ ▁Prince ▁ 9 0 ▁( 1 7 5 0 ) ▁– ▁broken ▁up ▁ 1 7 7 3 ▁ ▁Third ▁rates ▁of ▁ 8 0 ▁guns ▁ ▁New ark ▁ 8 0 ▁( 1 7 4 7 ) ▁– ▁broken ▁up ▁ 1 7 8 7 ▁ ▁Lanc aster ▁ 8 0 ▁( 1 7 4 9 ) ▁– ▁completed ▁as ▁a ▁ship ▁of ▁ 6 6 ▁guns . ▁broken ▁up ▁ 1 7 7 3 ▁ ▁Dev ons hire ▁ 8 0 ▁( 1 7 4 5 ) ▁– ▁cut ▁down ▁and ▁reduced ▁to