Can huge ship solve search for gas?
2 May 2014 Last updated at 00:02 BST
There are fears that the flow of gas to Europe could be disrupted because of the growing crisis in Ukraine.
Tomorrow emergency talks in Warsaw will discuss the risk to supplies.
As much as half of the gas pumped from Russia into Europe goes through Ukraine.
David Shukman reports from Lithuania, a country totally reliant on Russia for its gas.