The USS Mahaska was a wooden, double-ended sidewheel steamer built at the Portsmouth Navy Yard in Kittery, Maine, for the U.S. Navy during the Civil War. Her construction cost was approximately $130,002, and she was launched on December 10, 1861. The vessel was commissioned on May 5, 1862, under the command of Lieutenant Norman H. Farquhar. As a third-rate warship, Mahaska was designed for river and coastal operations, featuring a distinctive double-ended hull and sidewheel propulsion, which allowed for effective maneuvering in shallow and confined waters. Throughout her service, Mahaska was primarily tasked with patrol, blockade, and engagement missions along the U.S. Eastern seaboard and southern rivers. She initially operated in the Chesapeake Bay area, reporting for duty shortly after her commissioning. Notable early actions included engaging Confederate batteries along the Appomattox River and destroying entrenchments at West Point, Virginia. She also captured the schooner General Taylor in Chesapeake Bay on February 20, 1863. As the war progressed, Mahaska participated in the Union blockade of Charleston, engaging in attacks on key Confederate forts and batteries such as Fort Wagner, Morris Island, and Fort Sumter during August 1863. In 1864, Mahaska took part in a joint expedition against Jacksonville, Florida, and remained on patrol in the St. Johns River until August. After returning to Charleston, she underwent an overhaul in Boston, completed in January 1865. Following repairs, she resumed operations in Florida waters, capturing the schooner Delia near Bayport in February 1865. The vessel continued her patrol duties in southern waters until she was decommissioned at New Orleans on September 12, 1868. Subsequently, Mahaska was sold to John Dole of Boston in November 1868. Her service exemplifies the Union Navy’s reliance on versatile, river-capable steamers during the Civil War, playing a significant role in blockade and coastal operations.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.