Method of determining amount of roll of a ship by having a sighting hole in centre line of ship, and a vertical graduated batten in same transverse line but near ship’s side.
Indlela echaza ubungakanani bokugungqa-gungqa kwenqanawa ngokuba nomgxuma wokubona kumbindi wenqanawa kwakunye nebhathini ephawula ngamaqondo athe nkqo kwakulomgca onqamlezileyo kodwa kufutshane necala lenqanawa.