(EnergyAsia, August 6, Monday) — Keppel Singmarine Pte Ltd, the wholly-owned subsidiary of Singapore’s Keppel Offshore & Marine Ltd, said it has secured four contracts worth a total of S$350 million to build six offshore support vessels (OSV) and a derrick pipelay vessel. (US$1=S$1.52).The vessels are to be delivered between the second half of 2009…