Which vessels must comply with U.S. load line requirements?

U.S. load line requirements are essential for ensuring the safety and stability of vessels operating in U.S. waters. These regulations specify that both new vessels over 79 feet in length and all foreign vessels must meet certain load line criteria established to prevent overloading, which can lead to unsafe operating conditions.

New vessels over 79 feet typically have to comply with specific stability, structural integrity, and loading standards to ensure they can safely navigate various conditions at sea. This requirement helps maintain a high level of safety for both the vessel and its crew while also protecting the marine environment.

In addition to new vessels, all foreign vessels, regardless of size, must also adhere to U.S. load line requirements when they operate in U.S. waters. This rule ensures that vessels from other nations meet the same safety and stability standards as domestic vessels, thereby promoting overall maritime safety.

Consequently, the combined requirements for both foreign vessels and new vessels over 79 feet substantiate why the correct answer encompasses both specifications, making the choice that includes both elements the correct one.