General Info on submarines

Hello everyone,

I will start this off by saying I know nothing about submarines. have recently been given a research project that revolves around gathering data on old submarines and their shaft bearings . Specifically the ones that use water lubricated systems or lignum vitae wooden bearing materials. If anyone could point me in the right direction on some sources to learn general information on submarines, or even more specifically their shaft bearings and propulsion systems, or even some blue prints and engineering drawings. Any thing would be greatly appreciated, Thankyou!