They can change out the men with planes coming in and picking them up/dropping off new crew. They also receive supplies (food, gas, water, spare parts, etc.) from other Navy ships. They could perform the maintenance in deep water (although it wouldn't be ideal or suggested). Theoretically, they could stay out for ever (except Nuclear powered ones who would run out of their nuclear fuel in 50 yrs).
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The Battle of Midway was fought entirely at sea by aircraft from Japan's aircraft carrier forces, the United States Navy aircraft carrier forces, and land-based aircraft from Midway.
The aircraft carrier USS Bismarck Sea was the last US aircraft carrier sunk in WWII (during the battle for Iwo Jima).
The 888 foot long USS Lexington (fleet carrier). The IJN lost one light carrier.
Yes, but there wouldnt be realy much of a point the carrier cant get out of the baltic sea via any other rout, only port visit.
History's first decisive aircraft carrier battle. OR History's first decisive sea battle fought between carrier fleets.