The Atwood Admiral and Atwood Archer are under construction at Daewoo Shipbuilding & Marine Engineering (DSME) in South Korea.
Atwood said they will now be delayed by one year each with deliveries now set for September 2016 and June 2017 respectively.
In November last year the US-listed drilling contractor delayed the deliveries of both drillships by six months each.
“The two drillships had both previously been delayed by six months, so the incremental delays do not come as much of a surprise,” said Cowen & Co analyst JB Lowe.
“We
