Nautical Term: Bort flange

Definition of Bort flange

A projecting flange or lip, situated above a port or opening on a vessel’s hull. The primary function of this feature is to prevent water drips from entering the port during inclement weather conditions or rough seas.

For instance, consider a ship’s fuel oil intake system. To prevent seawater from entering the fuel oil system during heavy rainfall or rough seas, the system is equipped with a bort flange.

Explore other nautical terms:

Head back to the Nautical Dictionary

Take a Tour With Us!

Recommended Reading