Bute West Dock Basin, including Sea Walls and Catch Pit

Bute West Dock Basin, dating from the 19th century, features substantial sea walls made of large grey-brown stone blocks, with granite copings, although the western end of the southern sea wall has grey-brown stone copings. Squat cast iron bollards are set into the coping stones, some of which have iron lipping to the kerbs. At the time of inspection in March 1991, the walls were partially obscured by rubble used for reinforcement. Stairs leading down to the water can be seen to the east and west of the basin entrance. The basin is mostly filled in, but where visible, the walls are constructed of snecked brownish stone with band courses and granite copings. The entrance to the basin has rebates for former gates, with iron seatings for gate hinges retained to the south. The basin is elliptical in shape, with granite steps leading down to the floor, which is visible on the eastern side but largely obscured on the western side. To the north of the basin, the dock entrance also has rebates for former gates, retaining iron seatings for gate hinges to the south. East of the entrance to the former dock, which is north of the basin, there is a catch pit. This D-shaped feeder pit is made of grey-brown coursed hammer-dressed masonry and features a robust sluice archway with stepped voussoirs and a keystone.