On April 22, Newport News Shipbuilding (NNS), a division of Tenneco, laid the keel for Despotico, the first of nine double-hulled commercial product tankers the shipyard is building for two ...

Enlarging by a scale factor of 2 means that each side of the shape has been multiplied by 2. All the sides double in length and the shape will be twice as large. In the image below the purple ...