Seeming conflicting information is partly due to:
- There frequently being more than one diesel generator in a given sub – with the customer
frequently deciding on the total number of diesels and their total power.
- Put another way, different customer countries use different diesel generator, motor and AIP power
- There are cruising speed/power "red lines" (surfaced, snorting and fully submerged) which,
if exceeded, could cause overheating over certain periods or excessive wear and shorter lives
of engine parts.
- Maximum diesel generator power output may be twice or more of the minimum.
- Diesels may be run far lower than capacity – to reduce noise.
- Essential use of diesel in snorkeling mode will likely reduce power output by 20%.
- Diesel generators and the electric motors have different power output due to reduction gear or
- Battery and/or AIP use has variable impacts on motor power output.
Much more interesting and useful is focus on the small amount of information on Chinese, North Korean and Russian designed submarine propulsion mixtures.