Pontoon bridge transport soldiers and artillery across rivers in the South. In 1872 at a military review before Queen Victoria, a pontoon bridge was thrown across the River Thames at Windsor, Berkshire, where the river was wide. The bridge, comprising 15 pontoons held by 14 anchors, was completed in 22 minutes and then used to move five battalions of troops across the river. It was removed in 34 minutes the next day. The British Blanshard Pontoon stayed in British use until the late 1870s, when it was replaced by the "Blood Pontoon". The Blood Pontoon returned to the open boat system, which
Trimaran by Austal. The DARPA is experimenting with the trimaran design, and in 2012 awarded SAIC a contract to perform Phases 2 through 4 of the ACTUV Program. The contract is expected to be completed by August 2015. According to American usage, there are three terms that describe the main components of catamarans and trimarans, namely: “vaka”, “aka” and “ama”. These terms come from the Malay and Polynesian language group terms for parts of the outrigger canoe (The above terminologies reflects only American usage. In the UK the main hull of a trimaran is called simply the "main hull" or "centre