Duct Keel
A duct keel is a longitudinal structure located at the bottom of a ship's hull, which is designed to improve the ship's hydrodynamic performance. It is a protruding keel that extends below the main keel and runs along the centerline of the ship. The duct keel helps to reduce the ship's resistance to motion through the water by creating a flow of water that is directed towards the propeller. This results in a more efficient propulsion system, which can lead to fuel savings and improved speed. Additionally, the duct keel can provide some protection to the propeller and rudder from damage caused by floating debris or grounding.
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