Weta Trimaran with the largest fleets in France and the USA. Its sails were manufactured by Dutch windsurfing sail-maker Gaastra. The design evolved over time: In 2014 the new 2015 Weta was announced. Structural and cosmetic improvements include: In September 2014 the first of the new '2015 Weta' build were shipped to customers in the US. In April 2017, Weta announced the availability of a redesigned and bi-radial cut 9.3SqM square top mainsail and a 12 kg lighter foam-core boat. Weta Trimaran The Weta 4.4 Trimaran is a 4.4 metre (14 foot) sailing dinghy conceived and developed in New Zealand from 2001-2006
Pontoon bridge Earl of Shrewsbury crossed the Oise river across a pontoon bridge of portable leather vessels in 1441. Ottoman engineers built a pontoon bridge across the Golden Horn during the Siege of Constantinople (1453), using over a thousand barrels. The bridge was strong enough to support carts. The Ottoman Army constructed a pontoon bridge during the Siege of Rhodes (1480). Venetian pioneers built a floating bridge across the Adige at the Battle of Calliano (1487). The Spanish Army constructed a pontoon bridge at the Battle of Garigliano (1503). The Spanish Army of Flanders under Alexander Farnese, Duke of Parma built an