Southern Star is fitted with MacGregor 150t SWL AP2C1 Active Heave Compensated (AHC) crane capable of operating in 3000m water depth. See the video to appreciate benefits of AHC and AHC tension modes for subsea operations
MacGregor 150T AHC Crane
MacGregor 150T AHC Crane in operation
AHC benefits & tension modes for subsea operations