THE TRIBAL, J, K, L & L UNITS BORE “L” SUPERIOR ORIGINALLY. THE CHANGE TO “F” OCCURRED DURING 9/39. THE WHOLE SYSTEM WAS LATER CHANGED TO “G”, THE GAPS IN THE LIST BEING FILLED BY NEWER M & N CLASSES A FEW OF THE EARLIER UNITS WERE SUNK PRIOR TO THE CHANGE TO “G”, OTHERS WERE BUILDING AND DID NOT DISPLAY THE “F” SUPERIOR BEFORE COMPLETION/CHANGE TO “G.
