ASKER, NORWAY (17 December 2012) - TGS announces that it has signed a Letter of Intent with Dolphin Geophysical AS to charter the 16 streamer new build vessel, M/V Sanco Swift, for 3D multi-client projects in Europe during the 2013 summer season. The charter will begin in July and last for approximately three months. 

The details of the individual projects to be completed under this charter will be announced separately.