What is the function of the keel?

• A. To provide lateral stability and prevent rolling
• B. To provide longitudinal strength and stability to the ship's hull
• C. To anchor the ship in place
• D. To assist in propulsion

Answer: (B)

The function of the keel is primarily to provide longitudinal strength and stability to the ship's hull. The keel is the backbone of a ship, running along the bottom from the bow to the stern, and is critical in maintaining the vessel's shape and overall integrity. It helps to distribute stresses and loads that the ship may encounter in the water, such as waves and cargo shifts, ensuring that the structure can withstand these forces over time.

Additionally, the keel contributes to the ship's stability by lowering the center of gravity, which helps prevent capsizing. While lateral stability is important and provided by other hull elements, the keel specifically plays a vital role in ensuring the vessel is strong and stable along its length. This structural support allows the ship to navigate safely and efficiently through various sea conditions.

The other choices, while related to aspects of ship design and function, do not encapsulate the primary role of the keel in providing longitudinal strength and stability.