OPINION: Wedding bells are ringing in Singapore as Keppel Offshore & Marine and Sembcorp Marine prepare to walk down the aisle, but there is still some work to be done before we can call them a happy couple.

The merger has been suggested for a decade or more, the idea being to work together rather than against each other, and hence compete better against the South Koreans.

The pair have been rivals for years, competing at the very highest level in the drilling rig market and the FPSO market.