Maintaining the cargo derrick pulleys on board the Peninsular & Oriental Steam Navigation Company cargo liner Melita (1971) while under way at sea. The photographer is looking to port and slightly forward from the starboard bridge wing showing a deckhand sitting on the top of the aft 5 ton crane using a grease gun to grease the wire guide wheels on the right side of the crane. A vertical format image. Transparencies numbers P64280CT to P64286CT were taken on the same occasion.