▁should ▁not ▁be ▁armed ▁with ▁tur ret - mount ed ▁art illery . ▁The ▁rig ▁was ▁later ▁converted ▁to ▁a ▁bar que - rig , ▁which ▁required ▁fewer ▁hands ▁to ▁manage . ▁ ▁The ▁ships ▁were ▁designed ▁following ▁the ▁lines ▁of ▁, ▁by ▁then , ▁more ▁than ▁five ▁years ▁old . ▁Re ed ▁found ▁that , ▁on ▁the ▁dimensions ▁of ▁the ▁older ▁ship , ▁the ▁arm ament , ▁arm our ▁and ▁mach in ery ▁would ▁all ▁be ▁ins u fficient ▁for ▁the ▁stated ▁requirements , ▁and ▁asked ▁for ▁an ▁increase ▁in ▁t onn age , ▁which ▁was ▁rel uct antly ▁granted ▁by ▁the ▁Board . ▁ ▁Although ▁four ▁ships ▁were ▁required , ▁initially ▁only ▁two , ▁ ▁and ▁ ▁were ▁laid ▁down . ▁The ▁Admir alty , ▁following ▁a ▁commit ment ▁made ▁to ▁Parliament ▁by ▁the ▁First ▁Lord ▁of ▁the ▁Admir alty , ▁put ▁the ▁other ▁two ▁ships ▁out ▁to ▁tender . ▁Sub m issions ▁of ▁various ▁designs ▁were ▁received : ▁a ▁broad side ▁and ▁tur ret ▁ship ▁from ▁Mare ▁& ▁Company , ▁a ▁broad side ▁ship ▁from ▁Pal mers , ▁a ▁different ▁broad side ▁ship ▁from ▁Th ames ▁Iron works , ▁and ▁tur ret ▁ships ▁from ▁N api ers , ▁Sam ud as ▁and ▁La ird s ▁Co ▁& ▁S ons . ▁All ▁were ▁determined ▁to ▁be ▁in ▁some ▁way ▁in ade qu ate , ▁and ▁ultimately ▁the ▁third ▁and ▁fourth ▁ships ▁were ▁built , ▁with ▁some ▁delay , ▁to ▁the ▁Admir alty ▁design . ▁ ▁This ▁class ▁was ▁the ▁first ▁hom