It will naturally hardly ever prove possible to load and unload the cargo while the ship is actually on the move, but this can be done very rapidly, as indicated by the above suggestions.
Ngokwendalo kwakuba nzima ukuvavanywa okukuko ukuba ingakwazi ukuthwala umthwalo ngoku inqanawa ihamba-hambayo oku kungenziwa ngokukhawuleza ibe iboniswe zingcebiso ezingentla