Location of GALSI
|From||Hassi R'Mel, Algeria|
|Passes through||Mediterranean Sea, Sardinia|
|Partners||Sonatrach, Edison S.p.A., Enel, Sfirs, Hera Trading|
|Length||1,505 km (935 mi)|
|Maximum discharge||10 billion cubic meters per year|
|Diameter||48 in (1,219 mm)|
In 2007, while surveying the proposed route between Sardinia and Algeria, sonar data from an Underwater Autonomous Vehicle revealed a large wreck, later determined to be the French battleship Danton, sunk in 1917.
The pipeline will start from the Hassi R'mel field in Algeria and the 640 kilometres (400 mi) section will run to Koudiet Draouche at the coast of Mediterranean Sea. The 285 kilometres (177 mi) offshore section with two legs will be laid between Koudiet Draouche and Porto Botte (CI), Sardinia. The Sardinian section is planned approximately 300 kilometres (190 mi) from the south to Olbia. The offshore section between Sardinia and Italian mainland is 280 kilometres (170 mi) and the landfall will be Piombino (LI). It will be connected to the existing Italian gas grid in Tuscany.
Technical features 
The pipeline diameter will vary between 22 inches (560 mm) and 48 inches (1,220 mm). The initial capacity will be 8 billion cubic meters (bcm) of natural gas per annum. Total estimated costs of project are €2 billion. The pipeline is expected to become operational in 2014. The Italian section will be built by Snam Rete Gas.
Project company 
- Sonatrach (Algeria) - 41.6%
- Edison S.p.A. (Italy) - 20.8%
- Enel (Italy) - 15.6%
- Sfirs (Sardinia Autonomous Region) - 11.6%
- Hera Trading (Italy) - 10.4%
See also 
- Trans-Mediterranean Pipeline
- Greenstream pipeline
- Maghreb–Europe Gas Pipeline
- Trans-Saharan gas pipeline
- "Galsi, Snam Rete Sign MOU for Algeria-Italy Pipeline". Downstream Today. 2007-11-07. Retrieved 2007-11-10.
- "Italy, Algeria sign intergovernmental accord for GALSI gas pipeline project". Forbes. 2007-11-14. Retrieved 2009-02-21.
- "Edison, Enel Raise Stakes in GALSI". Downstream Today. 2008-02-19. Retrieved 2008-02-21.
- "Edison, Enel raise stakes in GALSI gas project as Wintershall withdraws". Forbes. 2008-02-19. Retrieved 2009-02-21.
- Jonathan Amos (2009-02-19). "Danton wreck found in deep water". BBC. Retrieved 2009-02-21.
- Deb Krajnak (2009-02-19). "French battleship intact after nearly a century under water". CNN. Retrieved 2009-02-21.
- "Galsi, Snam confirm Algeria-Italy pipeline plans". Forbes. 2008-09-30. Retrieved 2009-02-21.
- "Fugro plots Galsi pipe route". Upstream Online (NHST Media Group). 2007-10-18. Retrieved 2007-11-10.
- "Italy voices Galsi concerns.(contracts of Gazprom)". FSU Energy (subscription needed). 2006-08-11. Retrieved 2009-02-21.
- Project GALSI (in French)