How many casualties did the four carriers have ?
" Ark Royal " , in 1940 , carried 16 x 4.5 - inch guns , 32 x 40 mm " Pom - pom " and 32 x 0.5 inch against 8 x 5 " , 16 x 28 mm and 24 x .5 " for " Enterprise " , in 1940 .