, ▁and ▁the ▁last ▁two ▁( R unic ▁and ▁Sue vic ) ▁entering ▁service ▁two ▁years ▁later . ▁The ▁five ▁ships ▁enabled ▁White ▁Star ▁to ▁run ▁their ▁planned ▁month ly ▁" Col onial ▁service " ▁to ▁Australia . ▁ ▁Fe atures ▁The ▁J ub ile e - class ▁ships ▁were ▁built ▁for ▁a ▁dual ▁role ▁of ▁carrying ▁both ▁passengers ▁and ▁cargo , ▁and ▁were ▁at ▁the ▁time , ▁the ▁largest ▁ships ▁ever ▁made ▁for ▁the ▁Australia ▁service . ▁The ▁first ▁three ▁had ▁a ▁gross ▁register ▁t onn age ▁of ▁slightly ▁below ▁ 1 2 , 0 0 0 ▁tons , ▁and ▁a ▁capacity ▁for ▁ 3 2 0 ▁passengers . ▁The ▁passenger ▁service ▁proved ▁more ▁popular ▁than ▁White ▁Star ▁had ▁expected , ▁and ▁so ▁the ▁last ▁two ▁ships ▁of ▁the ▁class ▁incorpor ated ▁some ▁design ▁changes , ▁giving ▁them ▁a ▁slightly ▁higher ▁t onn age ▁of ▁around ▁ 1 2 , 5 0 0 ▁tons , ▁and ▁an ▁en larg ed ▁capacity ▁of ▁ 4 0 0 ▁passengers . ▁The ▁most ▁notable ▁design ▁changes ▁were ▁the ▁extension ▁of ▁the ▁po op ▁deck ▁and ▁the ▁moving ▁of ▁the ▁bridge ▁closer ▁to ▁the ▁bow . ▁All ▁of ▁the ▁ships ▁had ▁three ▁continuous ▁de cks , ▁with ▁the ▁passenger ▁accommod ation ▁located ▁mostly ▁a ft ▁of ▁amid ships . ▁ ▁The ▁passenger ▁accommod ation ▁was ▁built ▁with ▁the ▁imm igr ant ▁and ▁sett ler ▁trade ▁in ▁mind , ▁and ▁only ▁a ▁single ▁class ▁of ▁accommod ation ▁was ▁provided ; ▁this ▁was ▁described ▁as ▁third - class