US carriers have been using a steam powered catapult since the first introduction of catapult assisted aircraft launch. THe newest US Carrier, USS George Bush, uses an electro-magnetic railgun style launcher.
Catapults are used to today for fun contests like "pumpkin chunking" which includes the tossing of a pumpkin via catapult. Catapults are also used on aircraft carriers to launch planes.
Catapults are used by anglers when coarse fishing to 'catapult' their bait to the area of river or lake they are trying to catch a fish. Catapults are used to propel aircraft into the air from aircraft carrier ship decks Catapults are used for dropping bombs from boats on submarines, to propel aircrafts into the air from aircraft carriers, and for fun. Kids like to hurl water balloons at each other using catapults.
There are many ways a catapult has affected society. most of our modern day war machines even guns could be considered as catapults. catapults are still used today on aircraft carriers to lurnch jets. Many old cranes could have even been designed from catapults.
If the question refers to the Persian war of 1990-91, yes they did, but they were used to launch airplanes from aircraft carriers, not to launch projectiles over city walls.
in the sea
Only on aircraft carriers and with specially strong aircraft.
Transportation, launches, recovery, and maintenance of naval aircraft.
Aircraft carriers are a long range striking arm of a naval air force. Used properly they can decimate enemy fleets as the US carrier fleet did at Midway to the Japanese. In the Atlantic, British aircraft carriers were decisive to hunting down German ships. Not having aircraft carriers was possibly one of the biggest mistakes for the German navy.
They have not been used since the early 1830s. Look up the Clearmont steam boat, it was the best one made.
Canada has a few retired light aircraft carriers. A notable carrier that was used in Canada was the HMCS Warrior. This was in service from 1946 to 1948 and was scrapped in the year 1971.
Nimitz
The main carriers used in the Mediterranean were HMS Eagle, Argus, Furious, Ark Royal, Illustrious, Formidable, Victorious and Indomitable. The USS Wasp was also used to ferry aircraft to Malta twice. This does not include the smaller escort carriers. Italy was building carriers but none were finished.