Stena Don is a semi-submersible boring rig of the type Kværner Maritime CS30. It was constructed in 2001 at the Kværner Warnow shipyard in Germany.

Photo of Stena Don
Photo: Stena Drilling

The rig can operate at water depths of up to 500 meters with the use of dynamic positioning.

Stena Don is operated by Stena Drilling.