: The United States remains the only country to field fully capable conventional take-off and landing aircraft carriers, but a number of European countries are following the American lead and building smaller, more versatile assault helicopter carriers like the US Tarawa-Class LHAs and Wasp-Class LHDs. 

Half of the size of a Nimitz-class carrier, these ships normally deploy with a battalion of Marines, displace about 40,000-tons, and perform a variety of roles. With short take-off Harriers (or the F-35B replacement) they can perform sea control or strike missions. Cargo helicopters and ground troops allow them to perform amphibious assaults or peacekeeping deployments. Some roles with enthusiasm in peace-minded Europe include mine-sweeping or delivering humanitarian aide. Most of these ships support large hospital suites to care for the embarked troops or alternatively, refugee populations.

By 2015 European nations will commission ten ships of this type and South Korea will build two more.

This chart compares several of the small carriers now being built or proposed with the US LHDs already in service. Not included are those classes already in service, as many are reaching the ends of their useful lives.
 

NOTES: 
Quantity indicates the total number planned for the class.
1st Built is the year the first unit will be commissioned.
Flight Deck indicates if the ship has a full length flight deck that would allow short-take off type operations.
CTOL indicates conventional take-off and landing with catapults and arresting gear.
Well indicates if the ship has a docking well for amphibious landing craft.
Troops Number in parentheses indicates troops are not normally deployed.
- -Andy Wagner