To back an anchor, is to carry out a smaller one ahead of the one by which the vessel rides, to take off some of the strain. To back a sail, is throwing it aback. To back and fill, is alternately to back and fill the sails.
Ukuthi 'back' i-ankile kukuthwala encinanana ngaphambili kwenye ethi inqanawe ihambe ngayo, ukukhupha okunye ukutsaleka. Ukuthi 'back' iseyile kukuyijula, emva kwimasti ijongane nomoya ovela ngaphambili. Ukuthi 'back and fill', kukuxhasa nokuzalisa iiseyile.