(EnergyAsia, June 4, Thursday) — Swiber Holdings Limited, a Singapore-based offshore oil and gas service provider, said it plans to raise up to S$73.9 million through a private sale of 84 million new ordinary shares at $0.88 each.  The proposed sale represents approximately 19.9% of the existing issued share capital of Swiber. (US$1 = S$1.43)…