ities ▁became ▁numerous , ▁for ▁example : ▁sm oking ▁rooms , ▁l ou ng es , ▁and ▁prom en ade ▁deck . ▁In ▁ 1 9 0 7 , ▁R MS ▁Adri atic ▁even ▁offered ▁tur k ish ▁bath s ▁and ▁a ▁sw imming ▁pool . ▁In ▁the ▁ 1 9 2 0 s , ▁SS ▁Paris ▁was ▁the ▁first ▁l iner ▁to ▁offer ▁a ▁movie ▁theatre . ▁ ▁Build ers ▁and ▁sh ipping ▁companies ▁ ▁Sh ip y ards ▁ ▁British ▁and ▁German ▁ ▁The ▁British ▁and ▁the ▁Germ ans ▁were ▁the ▁most ▁f amed ▁in ▁ship building ▁during ▁the ▁great ▁era ▁of ▁ocean ▁lin ers . ▁In ▁Ireland , ▁Har land ▁& ▁Wol ff ▁ship yard ▁of ▁B elf ast ▁were ▁particularly ▁innov ative ▁and ▁succeeded ▁in ▁winning ▁the ▁trust ▁of ▁many ▁sh ipping ▁companies , ▁such ▁as ▁White ▁Star ▁Line . ▁These ▁gig antic ▁ship y ards ▁employed ▁a ▁large ▁portion ▁of ▁the ▁population ▁of ▁cities ▁and ▁built ▁h ull s , ▁machines , ▁furn it ures ▁and ▁lif eb o ats . ▁Among ▁the ▁other ▁well - known ▁British ▁ship y ards ▁were ▁Sw an , ▁Hunter ▁& ▁W igh am ▁Richard son , ▁the ▁builder ▁of ▁R MS ▁Ma ure t ania , ▁and ▁John ▁Brown ▁& ▁Company , ▁builder ▁of ▁. ▁ ▁Germany ▁had ▁many ▁ship y ards ▁on ▁the ▁coast ▁of ▁the ▁North ▁Sea ▁and ▁the ▁Balt ic ▁Sea , ▁including ▁Blo hm ▁& ▁V oss ▁and ▁AG ▁V ul can ▁St ett in . ▁Many