As part of the deal, Ulstein will supply its new P128 design, which was developed to serve the general PSV market related to work-over barges and jack-up rigs.
Ulstein Design & Solutions area sales manager Ove Dimmen said the new PSV design combines low fuel oil consumption with high carrying capacity.
"We wanted to come up with a design for a smaller PSV that could support barges and rigs in a more economical way than the traditional offshore support vessel, both in terms of building cost and operational costs," Dimmen said.
The Ulstein P128 design PSV, developed with input from Kuma Shipping and others, will have a length of 71.5m, breadth of 15m and deadweight of about 3,000t, while it can accommodate 24 people.
A work deck area of 610m² on the vessels can house four lengths of 12m-long casing pipes and features plate-covered crash barriers, to improve safety for the crew and cargo.
The discharge systems in the PSVs will facilitate safe and efficient loading and discharging of multiple dry and wet bulk cargoes simultaneously, according to Ulstein.
The vessels will also be equipped with dynamic positioning and automation systems to help ensure the safe and efficient operation of machinery and cargo handling.
Construction of the vessels will be carried out by an unconfirmed Chinese shipyard, with the delivery expected in 2014.
Image: Delivery of the 71.5m-long Ulstein P128 design PSVs is expected to take place in 2014. Image courtesy of Ulstein