Unclassified miscellaneous vessels of the United States Navy

The IX (unclassified–miscellaneous) hull classification symbol is used for commissioned ships of the United States Navy that do not fit into one of the standard categories. While most of the vessels in this category were unnamed barges and floating shipyard equipment, it also includes retired battleships, training equipment and simulators, and experimental vessels.

Please note, experimental ships should be placed in the following category: Category:Experimental ships of the United_States_Navy