A majority of United States Navy (USN) ships have at least a sternhelipad, capable of landing medium-sized naval helicopters for maritime patrol, search and rescue and anti-submarine missions. Many others even have hangars incorporated into the structure of the ship. It has become a standard part of modern ship design to have a deck that supports medium or large helicopters, as well as being able to house them in a hangar, for protection and maintenance.
none (equipped with platform for medium helicopter)
Along with these types and classes, many of the US navy's non-commissioned ships, specifically those of the Military Sealift Command, are aviation-capable as well. The United States Coast Guard also has cutters that are aviation-capable. Also, with the growing technology in UAVs and UCAVs, virtually every ship afloat has, or will soon have, some type of aviation capability.
Other vessels
The following are examples of other types aviation-capable vessels from other navies around the world: