MEXICO CITY, May 2 (Reuters) - Argentina's Southern

Energy Project said on Friday it has agreed with Golar LNG

a contract for a second liquefaction vessel with a

capacity of 3.5 million metric tons of liquefied natural gas

(LNG) per year, a vessel which should arrive in the country in

2028.

Under Southern Energy, state oil producer YPF and

other oil firms are planning to start up Argentina's first

liquefaction vessel by 2027.