<Dd> V: Speed of the torpedo (constant) </Dd> <Dd> C: Lift moment coefficient by one degree with respect to the airflow vector to the plates of the aerodynamic tail stabilizer </Dd> <Dd> b: The length between gravity center of torpedo and the lift moment center of the plates of the tail stabilizer </Dd> <Dd> S: Area sum of the horizontal plates of the tail stabilizer </Dd>

Where were the tail-fins of japanese shallow water torpedos manufactured