Vietnam's Dai Hung oilfield, located in the Nam Con Son Basin, is a major offshore producer with substantial oil and gas reserves. The field's production facilities, including a floating production unit, a tanker-converted FSO, and drilling rigs, are protected by a marine exclusion zone due to their location and the complex oil transfer operations involving subsea pipelines, a CALM buoy, and a floating hose, which can take over 20 hours to complete for large volumes.