A spokesman said a tow line was attached to the Kulluk, Shell's oil-drilling ship grounded near a remote island in Alaska, about 4 p.m. Sunday.

ANCHORAGE — Responders say a main tow line has been attached to a Shell oil-drilling ship that grounded on rocks near a remote Alaska island.

Unified Command spokesman Ignacio Gonzalez says the Royal Dutch Shell’s Kulluk was attached to the towing vessel about 4 p.m. Sunday.

Gonzalez, a Shell employee, says the tow line’s tension is being tested on the drill ship grounded off Sitkalidak Island.

Crews are waiting for the go-ahead from a salvage team before trying to tow the ship 30 miles to shelter in Kodiak Island’s Kiliuda Bay. Gonzalez says a decision has not yet been made on when the attempt will occur.

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Responders say there’s no sign of a breached hull or oil spill.