Completed the following sentence: In 1861, Irwin reported for duty aboard the screw frigate. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ During Irwin's tour, "Wabash" participated in the
Capture of Forts Hatteras and Clark at Hatteras Inlet, North Carolina, on 29 August 1861, before becoming the flagship of the South Atlantic Blockading Squadron, one of the squadrons engaged in the Union blockade of Confederate ports. "Wabash" participé à la capture de Fort Walker, Fort Beauregard, et Port Royal Sound, en Caroline du Sud, dans la bataille de Port Royal le 7 novembre 1861. Irwin was later in command of boat howitzers "Wabash" placed on shore during the Battle of Port Royal Ferry, South Carolina, on 1 January 1862, and was aboard "Wabash" for the Battle of Fort Pulaski at Cockspur Island, Georgia, on 10<unk>11 April 1862. ️<unk>️<unk>️<unk>️<unk>️