The spheres will be installed in the Caribbean for an energy infrastructure project by an unnamed company.
The pressurized spheres are each about 88 feet in diameter and capable of storing 63,100 barrels of LPG.
They will be fabricated and procured in Houston, Texas, with engineering in Plainfield, Illinois.
McDermott called the EPFC contract with an unnamed company to be sizeable, meaning it is between $1 million and $50 million.
