Dry Dock Door Seals

Dry docks are used when vessels need to undergo repairs or general maintenance work. When a vessel enters the dry dock, the gate(s) are closed, and the seawater is drained out so that hard to reach areas of the ship which have been exposed to seawater for a prolonged period can be accessed. Although a straightforward process in theory, the reality is not so simple. Currently, non-engineered extruded seals are used on dry dock doors, though these do not provide a completely watertight solution. As a result, auxiliary pumps are used to displace water from the dry dock area, but these create considerable environmental side effects. Trelleborg Marine & Infrastructure’s watertight method is more efficient and more effective than the conventional pump installation approach. By installing our Gina gasket solution according to the unique situation of each client, a leak free dry dock can be guaranteed for many years.

The Gina gasket is clamped on the required section of the Dry Dock Gate (DDG) to prevent water ingress due to external water pressure. The Gina gasket seals, absorbs transfer of the hydrostatic loads and movements between the DDG and the river or the sea. The Gina gasket is further able to cope with:

• Tidal differences
• Wave impacts
• Creep of concrete
• Temperature effects
• And if required engineered on impacts of earthquakes
  
  

The designs are generally based on the expected lifetime of 50 years. Since the early 20th century, Trelleborg has delivered specialized and custom-made sealing systems for the dry dock industry globally.