USS Grampus (SS-4), a Plunger-class submarine later named A-3, was the fourth ship of the United States Navy to be named for a member of the dolphin family, Grampus griseus.
The third USS Porpoise (SS-7) was an early Plunger-class submarine in the service of the United States Navy, later renamed as A-6.
USS Shark (SS-8) was the third vessel of the U.S. Navy to bear the name. She was an early Plunger-class submarine in the service of the United States Navy, later renamed as A-7.
The O'Brien class of destroyers was a class of six ships designed by and built for the United States Navy shortly before the United States entered World War I. The O'Brien class was the third of five classes of destroyers that were known as the "thousand tonners", because they were the first U.S. destroyers over 1,000 long tons (1,016 t) displacement.
USS Nicholson was an O'Brien-class destroyer built for the United States Navy before the American entry into World War I. The ship was the second U.S. Navy vessel named in honor of five members of the Nicholson family who rendered distinguished service in the American Revolutionary War, the War of 1812, and the American Civil War: brothers James, Samuel, and John Nicholson; William Nicholson, son of John; and James W. Nicholson, grandson of Samuel.
USS McDougal was an O'Brien-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 David Stockton McDougal, a U.S. Navy officer notable for his leadership during an 1863 battle off Japan while in command of Wyoming.
USS Cushing was an O'Brien-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 William B. Cushing, a U.S. Navy officer best known for sinking the Confederate ironclad warship CSS Albemarle during the American Civil War.
The Tucker class of destroyers was a ship class of six ships designed by and built for the United States Navy shortly before the United States entered World War I. The Tucker class was the fourth of five classes of destroyers that were known as the "thousand tonners", because they were the first U.S. destroyers over 1,000 long tons (1,016 t) displacement.
USS Conyngham was a Tucker-class destroyer built for the United States Navy prior to the American entry into World War I. The ship was the first U.S. Navy vessel named for Gustavus Conyngham.
USS Nina was a United States Navy steamer commissioned in 1866. She served in a variety of roles — as a tug, torpedo boat, torpedo boat tender, salvage ship, supply ship, and submarine tender — before she sank in a storm in 1910.
United States Navy 
Royal Danish Navy