Выражение встречается в следующем контексте:Chief Officer shall be responsible for the following as appropriate for vessel type, trade & cargo:

1. Perform a visual check of the watertightness of the hatchcover/shell sealing system, attention being given where applicable to the hatch rubber seals, pontoons, tarpaulins, screwdown dogs, cleats, trackway compression bars, trackway drain bottles and hatchcover trackways.

Заранее спасибо