USS Canonicus, a civil war era monitor, at the Jamestown Exposition near Hampton Roads, Virginia, on April 26, 1907.

She was last of the Civil War monitors when she was scrapped in 1908.

LOC: mp76000258

Colorized Source

State Ship Series: USS Iowa

So far, there are only three ships commissioned, named for the state of Iowa of the US Navy.

USS Iowa (1864), a steam frigate, she was originally named Ammonoosuc but was renamed in 1869.

USS Iowa (BB-4) was the first sea going battleship designed for the US Navy. Commissioned from 1897 to 1919.

USS Iowa (BB-53), a South Dakota class (1920) battleship, but she was never completed due to the Washington Naval Treaty.

USS Iowa (BB-61), the most famous of them. The lead ship of her class, she was commissioned on February 22, 1943. Finally Decommissioned on October 26, 1990.

The newest, USS Iowa (SSN-797), Virginia Class. She was laid down on April 28, 2019 and currently under construction.

Bonus: size comparison of BB-4 and BB-61. Their designs were less than 50 years apart.

source, source, source, source, source, source

NARA: 6409113, 45512727

Crowd gathers for the launch of US Navy's largest Aircraft Carrier, USS Midway (CVB-41), on March 20, 1945 at the Newport News Shipbuilding Co.

Note: the "B" in CVB stands is for Large. This designation was later dropped.

NARA: 179036496