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 innovation, in 1708 a Swedish army used a leather pontoon bridge to cross a river before the Battle of Holowczyn French general Jean Lannes's troops built a pontoon bridge to cross the Po river prior to the Battle of Montebello (1800). Napoleon's Grande Armée made extensive use of pontoon bridges at the battles of Aspern-Essling and Wagram under the supervision of General Henri Gatien Bertrand. General Jean Baptiste Eblé's engineers erected four pontoon bridges in a single night across the Dnieper during the Battle of Smolensk (1812). Working in cold water, Eblé's Dutch engineers constructed a 100-meter-long pontoon bridge during