The appellant, Transnet Limited t/a National Ports Authority, is the statutory authority controlling the port of Saldanha Bay. On 2 April 2004, while the bulk carrier MV Cleopatra Dream was departing the port under compulsory pilotage and fully laden with iron ore, it suffered a catastrophic power failure within the port limits. The vessel drifted towards shallow water and Jutten Island. At the pilot’s request, Transnet’s tugs intervened and towed the vessel to a place of safety within the port. Transnet subsequently arrested the vessel and its cargo and claimed R10 million as a salvage reward. The respondents admitted the existence of a salvage operation and distress but denied liability for a salvage reward, contending that Transnet acted under statutory and common law duties and not voluntarily.