This was a small Japanese vessel usually not included in sinkings. Not credited to Robalo in JANAC. Note that Robalo was lost on this patrol, and information on the sinking of Kurama Maru was deduced using data gathered from multiple credible sources.

Many sources, including Cressman, credit this sinking to USS Lapon (SS-260), as did Alden-McDonald until their latest revision.

Current research notes from Alden-McDonald:

"Attack is not in SORG. ROBALO only sub missing in this area of South China Sea in mid-July 44. Senji Nipon Senmeiroku (Wartime Japanese Shipping Register) says Kurama Maru reported being shelled by sub 18 July, 5 crew killed, sunk at 08-06N, 114-38E. Kiku Maru rescued survivors and arrived at Kudat, Borneo, on the same day. {Senji Sempaku Shi (Wartime Ships History) & The Imperial Japanese Navy in World War II say torpedoed and sunk 8 Jul, prob misprint. Warships of the Imperial Japanese Navy incorrectly attributes sinking to 260 LAPON.}"

Alden gives a detailed description of his conclusion that Robalo rather than Lapon sank Kamo Maru and Kuama Maru in an article he wrote for the October 2012 issue of The Submarine Review, titled "A Message from the Deep." (external link)