Environmental group Greenpeace said Tuesday it has targeted a drilling rig under contract to Chevron Corp. (CVX) in the U.K. in a protest similar to one that briefly shut down Cairn Energy PLC (CNE.LN) operations in Greenland last month.

Two Greenpeace activists have attached themselves to the anchor chain of the Stena Carron drill ship situated offshore Shetland, in Scotland, in an effort to prevent it sailing to the Lagavulin oil field where it was scheduled to drill an exploration well, the group said in a statement.

"Chevron is appealing to Greenpeace to immediately stop their actions," the company said in a statement.

Greenpeace said the protest is intended to highlight the dangers of deep water oil drilling in the wake of the BP oil spill in the Gulf of Mexico over the summer. Neither Cairn nor Chevron plan to drill in water depths equivalent to the 1,500-meter deep BP well that spewed oil for three months.

"We are confident our operations are safe and we can drill deep water wells in the Atlantic Margin safely and without environmental harm," Chevron said.

Greenpeace shut down Cairn operations offshore Greenland from Aug. 31 to Sept. 2.