What are some good book recommendations about Marine Engineering (thermodynamics, marine engines, marine fuels and lubricants, auxiliary systems of ships) ?
The first 3 books that came into my mind are
Marine Auxiliary Machinery by H. D. McGeorge
This book is informative and well written, sometimes I find myself going back to this book to fresh-up few things.
Modern Marine Internal Combustion Engines Book by Ievgen Bilousov, Mykola Bulgakov, and Volodymyr Savchuk
Marine Engineering by Harrington and edited by Roy L.
I think this one provides great value even ~50 years after its publication back in 1971.