Don't be afraid to make use of the tools available to you--both inside and outside this site. In a case like this,
Google,
Froogle, and
eBay are going to quickly answer your question regarding whether or not such a kit exists. I did a Google on
"aircraft carrier" 144--and several other related searches, and it looks like there's been a couple scratch-builds, but (as one would expect from the size of it) no commercial kit is available.
Even if you strongly suspect that someone around here will be able to answer a question in thirty seconds, you're going to get a lot more respect if you show that you're willing to do your own research. In this case, if
you can't find a 1:144 aircraft carrier--after making use of
all the tools available to you, then no one else will likely be able to find it, either.