(StwGbt: t. 352; a. 2 brass 12-pdr.)
Grampus, a stern-wheeler, served with Confederate army forces as a scout boat and transport on the Mississippi. Late in March 1862 she took an active part in the defense of Island No. 10 where the Confederates finally sank her to prevent capture, 7 April. Captain Marsh Miller was in command. The Union Gunboat Flotilla set out to raise her during May 1862 and did so but she is believed to be the Grampus No. 2 which burned the following 11 January.