The commanding officer, Lieutenant Tsutomu Sakuma, patiently wrote a description of his sailor's efforts to bring the boat back to the surface as their oxygen supply ran out.
Dupuy, Trevor N. The Harper Encyclopedia of Military Biography, New York, 1992
Akira Sakuma | Tsutomu Yamaguchi | Tsutomu Tomita | Tsutomu Shimomura | Tsutomu Sakuma | Tsutomu Ōhashi | Tsutomu Ito | Sakuma Dam | Roy Sakuma |