Carriers have evolved since their inception in the early twentieth century from wooden vessels used to deploy balloons to nuclear-powered warships that carry dozens of aircraft, including fighter jets and helicopters. As of 3 March 2016, there are thirty-seven active aircraft carriers in the world within twelve navies. The United States Navy has 10 large nuclear-powered carriers (known as supercarriers, carrying up to 90 aircraft each), the largest carriers in the world; the total deckspace is over twice that of all other nations' combined. As well as the supercarrier fleet, the US Navy has nine amphibious assault ships used primarily for helicopters (sometimes called helicopter carriers); these can also carry up to 25 fighter jets, and in some cases, are as large as some other nations' fixed-wing carriers. COUNT 5
QSN1 What were carriers used for in the early 20th century? ANS1 to deploy balloons QSN2 As of 3/3/2016, how many active aircraft carriers are there worldwide? ANS2 thirty-seven QSN3 What is another name for the 10 large nuclear-powered carriers operated by the U.S. Navy? ANS3 supercarriers QSN4 How many aircraft can supercarriers carry? ANS4 up to 90 QSN5 Who owns the largest carriers in the world? ANS5 The United States Navy