...ompany than the Niaga a Her name has not been mentioned yet, but people think it ought to be "Washington," as we have no man-of war with that name. The Fort Henry, an iron-clad gunboat, built at Carondelet , was launched there on Thursday, the 24th inst. The Choctaw, a vessel purchased some time since by the Navy Department, and subsequently converted into a ram, was launched on the previous Saturday. ...