Shandy, Novrizal Tri (2021) Analisis Kekuatan Poros Propeller Akibat Penambahan Daya Motor Kapal Tugboat Studi Kasus Kapal Michael = Analisys of The Strength of The Propeller Shaft Caused by The Addition of Tugboat’s Engine Power: Study Case of Michael Ship. Skripsi thesis, Universitas Hasanuddin.