They are very securely fastened down by drop-bolts and wing-nuts to form a packed, oil-tight joint with the hatch coaming.
Bakhuseleka kakhulu ngokukhawuleza kwaphantsi ngokubekwa kwezikhonkwane kunye neenathi zephiko ukwakha upakisho lwe-oyile eqinisiweyo yokujoyina ngehenjisi yomphetho ophakamileyo wokunqanda amanzi.