Even the vessels that have been built and operated up to the present are able to surmount waves up to 3 or 4 metres in height, deep ditches, and plant growth up to 2 metres in height, as well as marshy and swampy ground.
Iingqina, neengqayi ezibunjiweyo ukuze zisebenze ukuzokuthi ngoku, ziyakwazi ukoyisa amaza ukusuka kwimitha ezintathu okanye ezine ubude, imijelo enzulu kunye nokukhula kwezityalo ukuya kuma kwimitha ezimbini ngobude, ngokunjalo nemigxobhozo egubungelwe ngamaza emhlabeni.