Am basing it on the arrow markings. Apologies that the photos are not of enough resolution for us to decipher what's being written. I assume the words meant ladder inside or something. The second photo shows the same markings on a naval J35.
I honestly would be surprised if the naval version omitted the ladder; cos they are the ones who would need it most, over the air force who has the entire base to store spareloads of ladder.
I expect the ladder to also be present on the naval J-35. I never suggested the naval J-35 would lack the ladder.
However the picture posted above should be of a PLAAF J-35A rather than PLANAF J-35, because it lacks the big two digit unit number on the side of the nose which is a feature of PLANAF fighter jets including J-35.
(Left pic is air force J-35A, right pic is naval J-35, note how the J-35A lacks the two digit unit number, which should be partially visible if it were a naval J-35 in the boxed section)

