The vessels, to support offshore oil and gas fields around the clock, are scheduled for delivery in the fourth quarter of the 2012 financial year and the first quarter of 2013.
The yard, a unit of Japan's Onomichi Dockyard Company, did not disclose the price of the vessels, which are of 3,600 tonne deadweight capacity.
Greatship Global Offshore Services is a Singapore incorporated subsidiary of Greatship (India), which is a subsidiary of The Great Eastern Shipping Company.
The statement said Colombo Dockyard had already built two MPSVs to similar design.
The yard worked in collaborative consultation with the owners and Designer Seatech Solutions International of Singapore on the new vessels.
The new platform supply vessels have been designed to perform oil recovery functions as well, meeting the emerging needs of the industry and owners, the yard said.
"These vessels are designed for operating as advanced PSVs as well as light construction support vessels.
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