Emirates Spinnaker Tower five years, repainting and rebranding the tower in the sponsor's choice of colours and logos and new signage to be installed "no later than July 17" ahead of the 2015 America's Cup World Series. Dubai-based airline Emirates was reported to be the favoured sponsor, with the tower to be renamed as the Emirates Spinnaker Tower. On 5 June 2015, the city council confirmed that Emirates had been secured as the sponsor. Councillor Luke Stubbs said: "It's clearly a very good deal for the city and shows the benefit that Portsmouth is deriving from the America’s Cup... This also associates Portsmouth
Asymmetrical spinnaker incorporate a retractable bow sprit and an asymmetric spinnaker was the J/Boats J/105. The concept has spread rapidly through the sailing world. The tack of the sail may be attached at the bow like a genoa but is frequently mounted on a bowsprit, often a retracting one. If the spinnaker is mounted to a special bowsprit, it is often possible to fly the spinnaker and the jib at the same time; if not, then the spinnaker will be shadowed by the jib, and the jib should be furled when the spinnaker is in use. The asymmetric has two sheets, very