A sobering thought for folks...by these statistics, I am sure there were people thinking that the carrier was obsolete in 1942. But was we know, it wasn't then...and it isn't now.
Anyhow by June, 1942, five of the United States' first eight carriers had been sunk in the Pacific War:
The first eight, their commissioning date and disposition are as follows:
CV-1, USS Langley, 1922, Sunk Feb 27, 1942 south of Cilicap, Java
CV-2, USS Lexington, 1927, Sunk May 8, 1942 in the Battle of the Coral Sea
CV-3 USS Saratoga, 1927, Decommissioned 1946, Nuclear SINKEX 1946
CV-4, USS Ranger, 1934, Decommissioned 1946, Scrapped 1947
CV-5, USS Yorktown, 1937, Sunk June 7, 1942 in the Battle of Midway
CV-6, USS Enterprise, 1938, Decommissioned 1947, Scrapped 1960
CV-7, USS Wasp, 1940, Sunk September 15, 1942 in the Guadalcanal Campaign
CV-8, USS Hornet, 1941, Sunk Oct 27, 1942 in the Battle of the Santa Cruz Islands
The US Navy lost five carriers in the Pacific from February 1942 through October 1942. As I say...sobering.
By comparison, in that same general time frame, from May 1942 through August 1942, the Japanese lost six carriers:
IJS Shoho, Sunk May 6, 1942 in the Battle of the Coral Sea
IJS Soryu, Sunk June 4, 1942 in the Battle of Midway
IJS Akagi, Sunk June 5, 1942 in the Battle of Midway
IJS Hiryu, Sunk June 5, 1942 in the Battle of Midway
IJS Kaga, Sunk June 5, 1942 in the Battle of Midway
IJS Ryujo, Sunk August 24, 1942, in the Battle of the Eastern Solomon Islands
The Japanese would go on to lose another 14 carriers in the war, for a total of 20 sunk. The US would not lose another major carrier, but they would lose another six escort and jeep carriers to the Japanese, three by Kamikaze (one during the battle of Leyte Gulf), one by submarine, and two more during the Battle of Leyte Gulf in 1944, one by dive bomber and one by naval gunfire. Altogether, the US loss eleven carriers.
And this was just in the Pacific between the US and Japanese. A total of 31 aircraft carriers sunk in the Pacific between the US and Japan.
The US also lost one escort carrier to the Germans (sub).
Britain lost eight carriers during the war, one in the Pacific to Japan, and seven to the Germans.
Italy also had two incomplete carriers destroyed during the war.
So...in World War II, over the space of six years, a total of 42 aircraft carriers were destroyed. This seems hard to imagine now...but it was a fierce war.