Three crewman cleaning the suction head taken on board the suction hopper dredger Geopotes X (1969) in the Firth of Forth, Scotland. The photographer is standing on the starboard side, looking aft. Two crewmen are standing on the deck, lifting a metal part off the right hand side of the suction head, whilst the third crewman stands on top of the head feeding a cable through attached to the part. A landmass is in the background. This is Slide 9 of a lecture titled "World Wide Ship Delivery" given by Captain Henry P. Bird detailing his service as Chief Officer for the suction hopper dredger Geopotes X (1969), owned by Volker Dredging Co Ltd, from 24 June 1980 to 14 July 1980. The lecture also details his service with the same ship as Second Officer, chartered by Dome Petroleum Company, Canada, from 4 August 1980 to 11 September 1980. The lecture consists of 56 slides.