... in marshy and swampy area, soft terrain, as well as floating on water.Buy our full Marsh Buggy /Amphibious Excavator or ... Top, such as CAT, Hitachi... We have comprehensive range of pontoon design to suit varies excavator capacity. 8 - 10 ton, 12 ... , 23 - 26 ton, 27-29 ton, 30 - 35 ton.Each pontoon has 3 independent watertight compartments. Marsh Buggy/ Amphibious Excavator