Three engineer officer cadets being instructed in the use of a lathe in the engineers workshop on board the Federal Steam Navigation Company cargo liner Otaio (1958). One of the cadets is standing in front of the lathe while the other two are on either side of the instructor, the Third Engineer Officer, leaning over the back screen of the machine. The cadets are wearing boiler suits. N85711CN is a duplicate negative of colour transparency P64396CT. Transparencies P64394CT to P64397CT inclusive were taken on the same occasion.