SeaCart 30 Trimaran SeaCart 30 Trimaran The SeaCart 30 is a trimaran sailboat. A trimaran is a multihulled boat consisting of a main hull (vaka) and two smaller outrigger hulls (amas), attached to the main hull with lateral struts (akas). Since 2005 when the full carbon one design SeaCart 30 GP (Grand Prix) (SC30 GP) offshore Trimaran was introduced performance sailors have been enjoying flying two of three hulls. Rudders on the amas (pontoons) make handling swift and precise. The ultra light strong carbon construction and a non existing interour (can be added) plus extra large sailplan make the carbon GP model a
Pontoon bridge remain in place much longer. Hobart Bridge, a long pontoon bridge built 1943 in Hobart, was only replaced after 21 years. The fourth Galata Bridge that spans the Golden Horn in Istanbul, Turkey was built in 1912 and operated for 80 years. Provisional and lightweight pontoon bridge are easily damaged. The bridge can be dislodged or inundated when the load limit of the bridge is exceeded. The bridge can be induced to sway or oscillate in a hazardous manner from the swell, from a storm, a flood or a fast moving load. Ice or floating objects (flotsam) can accumulate on