What is the name of the compartment where the anchor chain is stowed?

The correct answer is "Chain Locker." In naval terminology, the chain locker is specifically designed to securely hold the anchor chain when it is not in use. Situated typically at the bow of the ship, it ensures that the heavy chain, which is essential for anchoring, is stored safely and efficiently, preventing any movement that could lead to damage or hazards while the vessel is underway.

The term "Anchor Locker" may be misleading, as although it might seem descriptive, it generally does not specifically refer to where the chain is kept. "Storage Bay" is a broad and nonspecific term that could apply to various storage areas on a ship, lacking the specificity needed for naval operations. "Anchor Room" is not a standard term used in naval vocabulary and might confuse the function of anchor storage with a more general area without clarifying the function of holding the chain. Therefore, the term "Chain Locker" is the precise and correct nomenclature used in naval contexts for the storage of anchor chains.