A wide, flat-bottom, buoyant, amphibious hull with a powered articulating member mounted on the deck. The hull is propelled by at least one engine-driven propeller rotating above the hull. The hull has a shallow draft and distributes its weight over a large area. These features cooperatively provide a vehicle capable of installing or servicing power transmission poles, towers, or other structures located in environmentally sensitive wetlands, swamps, marshes, shallow water, or terrain which is not efficiently accessible by other means.