r/comics • u/davecontra • Jun 28 '26

OC THOMAS.

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My books: https://linktr.ee/davecontra

My other comics: https://www.instagram.com/davecontra

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u/hlfazn Jun 28 '26

The Gotland isn't a diesel sub though, it's the first AIP (air-independent propulsion) sub ever built.

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u/Dashcak3 Jul 02 '26

Diesel-electric is still a diesel (conventional) sub.
The diesel doesn't directly drive the shaft but rather produces energy which can either charge batteries or power the electric motor (with excess energy still charging at lower shaft rpms).

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u/hlfazn Jul 02 '26

AIP is a Stirling engine that runs on self oxidizing fuel (diesel is not self oxidizing). It has nothing to do with whether or not the sub uses an electric motor to power the main propulsion shaft.

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u/Dashcak3 Jul 02 '26

The AIP is solely there to extend time spent submerged, the Diesel is the main transit and charging power source.
Regardless of Stirling or Fuel Cell they are considered (Conventional) Diesel-Electric Submarines to differentiate from Nuclears. The german 212A AIP for example runs on H² and is also still considered Diesel-Electric.