There are many copper alloys which fall within each group and a selection are examined here. Copper Development Association publication 120 Copper and Copper Alloys gives a more comprehensive breakdown of standards, compositions and properties. Typical applications for marine environments include heat exchangers and condensers, seawater piping, hydraulic tubing, pump and valve components, bearings, fasteners, marine fittings, propellers, shafts, offshore sheathing and aquaculture cages.