TRENTON.
POWHATAN.
Old-fashioned wooden paddle-wheel frigate.
ASHUELOT. MONOCACY.
Iron, paddle-wheel, double-ender corvettes. These vessels were originally provided with a rudder at each end, but the forward one is removed. They can carry in addition to their present armament one 11-inch pivot forward and one 11-inch pivot aft. Musket-proof pilot-house on the hurricane-deck.
ASHUELOT.
MICHIGAN.
Old-fashioned iron, paddle-wheel gun-boat carrying a battery of boat-guns.