: 5x Nimitz class (N), 1x Enterprise class (E), 4x Forrestal class (F), 4x Kitty Hawk class (K), 1x Midway class (M)
Between 1990 and 1991, all Essex class, 1x Midway class were decommissioned
It used 6 CBGs in 1991 against Iraq:
CVs: Midway (M), Saratoga (F), Ranger (F), America (K), JFK (K)
CVN: Theodore Roosevelt (N)
2 were pulled off prior to the Gulf War but were present for Desert Shield and on station for ~120 days
CV: Independence (F)
CVN: Dwight D Eisenhower (N)
6 others did not participate in the Gulf War:
CV: Kitty Hawk (K), Forrestal (F), Constellation (K)
CVN: Carl Vinson (N), Abraham Lincoln (N), Nimitz (N), Enterprise (E)
Of the CVs,
and was in pre-deployment training,
and only deployed 3 months afters conclusion of hostilitie.
Of the CVNs,
where the ship was cut open,
,
, and
.
So from this, we can see that at maximum, in a war of choice with all the time in the world to prepare, ~1/3 of all aircraft carriers are available. If you stretch it to an emergency, you'd have 9/15 (60%) available.
Today there are 10x Nimitz class and 2x Gerald Ford class.
. Of the Nimitz class,
at any one time. Another 2x are on restricted availability or short term (18 month) overhauls (Bush, Roosevelt)
In reality there are currently 6x Nimitz carriers available for deployment simultaneously (as of today: Nimitz, Lincoln, Truman, Reagan, Vinson, Eisenhower).