LONDON (Bloomberg) - Seadrill Ltd., the Norwegian oil-rig company set up by billionaire John Fredriksen, took delivery of a deepwater drilling ship contracted to Exxon Mobil Corp.

The ultra-deepwater drillship West Polaris from Samsung Heavy Industries Co. Ltd. will leave Korean waters tomorrow after fueling for its first assignment for Exxon in Brazil, Bermuda-based Seadrill said yesterday.

Another vessel, the West Phoenix is undergoing testing in Las Palmas, Spain, which is taking longer than anticipated. The vessel will start work for a unit of Total SA in October instead of August because of the delay, Seadrill said.

West Phoenix would be let at a price of about $510,000 a day, "which will be deferred as a consequence for a couple of months," Trond Brandsrud, chief financial officer of Seadrill Management AS, said today by telephone. "There are no other contractual implications" stemming from the delay, he said.

Sixty days at that rate is $30.6 million.

Seadrill's shares have risen 10 percent this year as record crude prices have boosted demand for exploration services.

The shares fell 2.5 kroner to 146.25 kroner in Oslo at 11.23am. They earlier fell to 145.25 kroner, the lowest since April 18.