Officer cadets under instruction from a Second Officer in a classroom on board the Federal Steam Navigation Company cargo liner Otaio (1958).

Officer cadets under instruction from a Second Officer in a classroom on board the Federal Steam Navigation Company cargo liner Otaio (1958). The officer is looking over the shoulder of one of the cadets and another cadet is reading a text book about Sound. Various types of switches and electrical equipment are displayed on the back wall. Transparencies P64401CT and P64402CT were taken on the same occasion.