== (NK9H) Ha 45-21 Displacement == 

 From the Talk page: 

 Engine displacements can not always be calculated correctly and there is advice against self-calculation at the engine article content page, we have a big problem on Wikipedia with editors calculating their own figures and inserting them into cited specification sections, even against figures cited directly from the manufacturers. This engine most likely has two master connecting rods with articulated rods for the other 16 cylinders, we don't know the exact geometry or the stroke of these other rods, the figure may well be correct. In the absence of blueprints or an engine manual we have to use figures published in reliable sources (even if they may appear to be wrong or are indeed wrong). This principle is described at Wikipedia:Verifiability which is a policy (as opposed to a guideline). Both Jane's and Gunston give 32 litres as the capacity. Nimbus (Cumulus nimbus floats by)  

 Now the source is given by the approval of the TAIC-OPNAV. Which should make your calculation out of the question.