What an amazing picture.
Most, if not all, of the ships in that photo have been in commission less than three years.
FWIW the USS Langley CVL-27 was commissioned in August of 1943.
Other than the USS Saratroga CV-3 and USS Enterprise CV-6 every fleet and light carrier in the Pacific was commissioned after 31 December 1942.
By 31 January 1944 the US Navy had brought 9 of the light carriers and 5 of the Essex class carriers on line. By the time that picture was taken there were 12 of the Essex class carriers in service!!!
One final comment, this pic is a far cry from late in 1942 when the USS Enterprise was the only fleet carrier available to the US Navy in the Pacific.
Regards
alfa6 ;>}