The article presents the process of designing and strength analysis of the body and continuous track unit of a specialised track-laying vehicle for the transport of biomass obtained on wetlands performed within framework of the development project No. PBS2/B8/11/2013 “Autonomous technology for the transport of biomass obtained on protected wetlands” related to the removal of unwanted vegetation from protected areas, especially national parks, landscape parks and Natura 2000 areas. The new vehicle was designed by a consortium led by the Team for Power Engineering and Dynamics of Agricultural Machines at the Industrial Institute of Agricultural Engineering. Its aim is to find a solution which would significantly increase the efficiency of the process of obtaining biomass taking account of the autonomous operation of the new machine.