Backers of an offshore windfarm scheme near Aberdeen have tabled plans to increase the scale of the development.
Turbines at the European Offshore Wind Deployment Centre (EOWDC) could be up to 651ft high under the changes, 12ft taller than previously planned.
The rotor blades of the structures would also be up to 15% longer, a difference of about 36ft.
But the height of turbines closest to the shore would be reduced by more than 7%, or 47.5ft under the updated plans.
The project has met strong opposition from US billionaire Donald Trump, who has threatened to call a halt to remaining work on his golf resort at Menie if the offshore test centre plans are approved by the Scottish Government.
But the team behind the £230million EOWDC said the new proposals were submitted to ensure Scotland does not miss an opportunity to “lead the world” in the field.
Iain Todd, project spokesman for the EOWDC, said the changes are based on requirements for the latest turbine designs.
More than 12 international turbine manufacturers expressed an interest in the project, a list which has been whittled down to six.
Mr Todd said: “In keeping with the demonstrator concept, we decided to make minor adjustments to the project dimensions to accommodate the tallest of these turbines in the event we procure them.
“We believe the proposed adjustment gives the scheme, Aberdeen City and Shire and Scotland the best possible chance to be genuine world leaders in offshore wind.”
Aside from vocal critic Mr Trump, the plans have also met objections from the Ministry of Defence (MOD) and the National Air Traffic Services (NATS) among others.
A spokesman for NATS said: “We received more than 2,000 wind turbine development applications last year, yet 98% raised no objection from us.
“Where we do object, it is always on the grounds of aviation safety and efficiency.”
In response to requests from local golf clubs, new artist impressions have been released showing how the windfarm would look from the Trump International, Murcar and Royal Aberdeen courses.
The public has to Sep-tember 20 to comment.
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