Efforts to put the second of two of the world's biggest offshore wind turbines in place near the Beatrice Field in the Moray Firth has been postponed.
The turbine and blades can reach 170 metres high
The first tower and its components were taken by barge from the former oil fabrication yard at Nigg in August.
However, the second turbine could not be floated due to poor weather and a heavy barge needed to carry out the task has been diverted to another job.
The company behind the project hope to float the turbine later in the year.
The turbine which is in place weighs about 1,000 tonnes and - when one of its three 63 metre long blades is pointing straight up - towers 170 metres above sea level.
A Scottish-based consortium led by oil firm Talisman and Scottish and Southern Energy (SSE) is behind the deepwater turbines in a £35m pilot.
If successful, a full 200-turbine wind farm will be built 12 miles offshore.
A spokesman for Talisman said: "Due to contractual requirements, the Rambiz heavy lift barge has now departed for another job.
"Talisman and SSE are in discussions as to whether the installation can take place later this year once the Rambiz is available. If not, installation will take place as soon as possible in 2007."