This is the world's first installed offshore liquid natural gas terminal. Over 800 people were involved in constructing the caisson, the budget for which surpassed 200 million Euros.
The project consisted of building the electrical-mechanical facilities needed to run the LNG terminal, and building the pre-stressed concrete caisson (GBS) measuring 180 m long, 88 m wide, and 47 m high. This facility houses two gas storage tanks with capacity to hold 125,000 m³ each. Its distribution capacity is 8 million metric tonnes per year. Each concrete structure is carefully bolstered with reinforced and pre-stressed steel.
ACCIONA Industrial was the main subcontractor in charge of public works for this project, and the contractor Aker Kvaerner Contracting coordinated the public works tasks, gas tank installation, "top side" plant assembly, opening of the dike, and later tow-line to the Adriatic Sea, as well as completion of the facility and launch of the LNG terminal.
From Algeciras to its final destination in the Adriatic Sea, the terminal was towed by boats for a total of 21 days. It travelled along the North African coast and circled around Palermo and the "boot" of Italy.