Veetiheduse tagamiseks kaeti laadluuk vähemalt 2 kihi presendiga, mille servad kiiluti salkkõrvadesse salklattide ja kiilude abil. Sellist sulgemist nimetati salkimiseks.
For all hatchways in position 1 or 2 steel bars or other equivalent means shall be provided in order efficiently and independently to secure each section of hatchway covers after the tarpaulins are battened down.
