sentences:  A packraft/trail boat is intended for use in open bodies of water.Distinction from "man-portable" 
  A packraft is distinguished from a strictly man-portable raft insofar as it is designed to be light enough to represent only a fraction of the total weight an individual can reasonably carry.A packraft can be carried for extended periods, along with food, water, shelter, and other supplies that would enable the individual to traverse long distances through difficult terrain.