 This was especially true of the auxiliary naval vessels that supported the combat ships and landing ships such as LSTs, which had been one of the types in especially short supply in 1943.Similarly, having a sufficient number of oil tankers was determined early in the program to be as important, if not more so, than dry cargo ships for the war effort.In the fourth wave of expansion in 1942, the commission increased the program's orders for the construction of T2- and T3-type tankers.