Norwegian shipbuilder Havyard Group is outsourcing construction of a platform supply vessel (PSV) delayed by four years to compatriot yard Kleven Verft.

The "challenging" situation at the Havyard Ship Technology yard, which was been working on the PSV, is also the reason the group has decided not to disclose its financial results for the second consecutive quarter.

Delays to earlier projects at the yard in Leirvik have had a knock-on effect on the completion of the remaining orderbook of seven vessels, Havyard said on Friday.