USS Markab (AD-21) -  USS Markab (AD-21) was a Hamul-class destroyer tender named for Markab the third-brightest star in the constellation Pegasus. Built as the cargo ship Mormacpenn by Ingalls Shipbuilding Company of Pascagoula Mississippi; launched 21 December 1940; acquired by the United States Navy on 2 June 1941 at Charleston South Carolina; and commissioned as USS Markab (AK 31) on 15 June 1941 with Commander Allen D. Brown in command. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer to this question is:
Mean Of Transportation