Indeed, we don't know if this is pure SF or more real scenario.
Both vessels are actually quite a bit larger than the length he's looking for and due to hangar space and other facilities also a good deal larger than what he's probably looking for, tonnage-wise. USS Wasp herself is something like 15-20% longer than her namesake WWII carrier.
Only couple of meters.
It's hard to find any suitable ship under 190m, I maybe wrong ... but there is none ?