What type of flag is flown at the bow of warships when anchored?

The type of flag flown at the bow of warships when anchored is known as the jack. This flag, which is typically a smaller flag, is displayed at the bow to signify the allegiance of the ship and its nationality. When a warship is at anchor, it does not fly the national ensign at the bow, as that is traditionally displayed at the stern. The jack is specifically designed for this purpose and serves as a symbol of the vessel's identity while it is moored.

The garrison flag, which is a larger flag, is generally used during ceremonial occasions and is hoisted on land at military installations. The storm flag is smaller and used in severe weather conditions to reduce the risk of wear and tear. The standard flag is not a specific designation in terms of naval protocol, as it can refer to various flags representing specific units or commands but does not apply in this context. Thus, the jack is the correct designation for the flag flown at the bow of a warship while anchored.