Interesting little fact.If Fritz Grade won the DKIG whilst LI on U-183,surely this award was prior to the boats sailing to Penang,on 3/7/43 as Monsun boat?Also this vessel was sunk by the USS Besugo,in the Java Sea, 23/4/45.Now what i found so interesting was the U-boat was under a Japanese flag, and carrying a Japanese emblem.Had boat been subordinated to Japanese Imperial Navy, and as such who had authorised this action? BDU,or local situation.War had not ended yet, was radio communication not possible to Germany.Legally would this boat still be technically a Japanese vessel,and not a U-boat as such.Ostensibly there was a sole survivor, the navigator, is he still alive? If this boat was under Japanese command,was KL Fritz Schneewind at the helm during its demise, an interesting story i think.