The only aircraft you can currently land on a carrier with is a SU-33 or by using a mod (F/A-18C) but it only uses the external model, it uses a Su cockpit or there is another one, which uses a (F-15C) cockpit but I'm pretty sure that version doesn't work with 1.2.10.
As someone has already stated you have to make a mission eg - (mission Editor),(Add or modify ship group) then select what carrier you want, either Russian or USA.
The F/A-18C is far from out (if only!), if you are not subscribed to the ED news letter I recommend you doing it, it will give you some information worth reading up on. :thumbup: