Here's a short story:

A fleet carrier is intended to operate with the main fleet and usually provides an offensive capability. These are the largest carriers capable of fast speeds. By comparison, escort carriers were developed to provide defense for convoys of ships. They were smaller and slower with lower numbers of aircraft carried. Most were built from mercantile hulls or, in the case of merchant aircraft carriers, were bulk cargo ships with a flight deck added on top. Light aircraft carriers were carriers that were fast enough to operate with the fleet but of smaller size with reduced aircraft capacity. Soviet aircraft carriers now in use by Russia are actually called heavy aviation cruisers, these ships while sized in the range of large fleet carriers were designed to deploy alone or with escorts and provide both strong defensive weaponry and heavy offensive missiles equivalent to a guided missile cruiser in addition to supporting fighters and helicopters. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: who is the fleet carrier meant to work with
Guess: main fleet

Question: what do they provide
Guess: an offensive capability.

Question: what were escort carriers made for?
Guess: to provide defense for convoys of ships.

Question: what are the ones used by Russia called?
Guess: called heavy aviation cruisers

Question: what were they designed for?
Guess: were designed to deploy alone or with escorts

Question: what did they support?
Guess: fighters and helicopters.

Question: which is the fastest?
Guess: A fleet carrier

Now answer the following question in the same format.

Question: why do the light aircrafts of a smaller size?

reduced aircraft capacity