>>13129294 U
28 cylinders isn't that much. Pic related. Zvezda M504B2 diesel engine, 56 cylinders in 7 banks, that is 8 row radial. It had slightly smaller 42 cylinder version, M503, that was more common. IT was used tons small surface combatants like torpedo and missile boats in commie countries as main power plants and in larger warships as backup power plant. Funniest version must have been M507, that was two M504's coupled to single damn gear box, 112 cylinders of communist engineering.
Best part is the most common installation, two bottom cylinder banks had to reached from under the oily bilge water. Imagine adjusting the valves, blind just based feeling the fucking things. Guess what kind of bullshit junior engineer nco's had to deal with.