Aker Maritime is reportedly set to sell its subsea operations for $620.7 million to France's Coflexip, Reuters reported Norway's NRK public radio as saying. It said Aker's board had unanimously approved the sale. The sale would cover Aker's most profitable businesses and exclude its Norwegian construction yards Aker Stord and Aker Verdal. But Aker Maritime, which offers services ranging from seismic surveys to decommissioning of ageing oil and gas installations, said the report was speculative. "We don't comment on this type of media speculation," Aker Maritime spokesman Torbjoern Andersen said. In Paris, Coflexip also declined comment. Coflexip shares were trading 2.5 percent weaker in Paris at 144.5 euros.