Within the ports estate of 29 piers and harbours are 5 main commercial piers, Hatston, Kirkwall Pier, Stromness Pier (including Copland’s Dock) Lyness and the harbour of Scapa Flow.

Due to the diversity of the Harbour Authority’s business, there is no single revenue stream that identifies revenue; instead passengers and freight movements, cruise ships, oil and gas tankers, accommodation rigs, north sea dive and support vessels and diving and fishing vessels are key stakeholders.