What are the main magnesium alloys used in ships

Because the magnesium alloy used for ships in addition to the use of its small density, shock absorption and damping function is good, but also to ensure its erosion resistance function. Therefore, the magnesium alloys used for ship plate are mainly Mg-Al-rare earth system, such as adding rare earth elements such as yttrium and erbium. And the general idea of the ship hull is magnesium - aluminum - zinc on the line