United States Ship is a ship prefix used to identify a commissioned ship of the United States Navy and applies to a ship only while it is in commission. Before commissioning, the vessel may be referred to as a "pre-commissioning unit" (PCU), but is officially referred to by name with no prefix. After decommissioning, it is referred to by name with no prefix, though people commonly refer to those ships with the prefix "ex-", as in ex-ship name. In-service but non-commissioned Navy ships go by the prefix USNS, which stands for United States Naval Ship.
USS Porter was a Tucker-class destroyer built for the United States Navy prior to the American entry into World War I. The ship was the second U.S. Navy vessel named in honor of both David Porter and his son David Dixon Porter.
The Miantonomoh class consisted of four monitors built for the Union Navy during the U.S. Civil War, but only one ship was completed early enough to participate in the war. They were broken up in 1874–1875.
USS Alamosa (AK-156) was the lead ship of the Alamosa-class cargo ships, commissioned by the US Navy for service in World War II. She was responsible for delivering troops, goods and equipment to locations in the war zone.
USS G. W. Blunt was a Sandy Hook pilot boat acquired by the Union Navy during the American Civil War in 1861. See George W. Blunt (1856) for more details. She was used by the Union Navy as a gunboat as well as a dispatch boat in support of the Union Navy blockade of Confederate waterways.
HMS LST-403 was a United States Navy LST-1-class tank landing ship that was transferred to the Royal Navy during World War II. As with many of her class, the ship was never named. Instead, she was referred to by her hull designation.
Argentine Navy 
United States Navy 
Romanian Naval Forces 
Chilean Navy 