(EnergyAsia, May 10) — Singapore’s SembCorp Marine said its first quarter net after-tax profit rose 72% to a record S$40.8 million from year-ago levels while group revenue increased by 12% S$499.1 million. (US$1=S$1.56).            The company said rig building and the ship repair business contributed to the increases.   The profit increase was due largely…