Emirates Spinnaker Tower with a global brand and that can only be a good thing." The tower was to be repainted in a red and white colour scheme—similar to that of local football rivals Southampton F.C.—as part of the rebranding but following a petition with over 10,000 signatures, Portsmouth City Council decided to rethink the change. Portsmouth City Council leader Donna Jones said: "We are working up a new design for the tower [which] will reflect the city’s heritage... I don’t want a tower in the city [that] no one likes the look of." The new design, unveiled on 19 June 2015, featured
Spinnaker operate within an airflow that generates lift. A well designed spinnaker will have taut leading edges when filled; leading edges that curl in will both reduce the lift and risk of collapse of the spinnaker. A well designed spinnaker will also have a smooth curve when filled, with no bubbles or depressions caused by inconsistent stretching of the sail fabric. Any deviations from a smooth curve will cause the airflow over the leeward side of the sail to separate causing a reduction in lift and reduced performance. There are two main categories of spinnakers, symmetric and asymmetric depending on whether