The international conventions for high seas had provided that each ship must have one flag only and must not change its flag during the voyage or for any reason. However. in the last years many ships have infringed this rule and had registered with other states that had allowed any foreign ships to register in their ports. These states are an open registry states. https://www.diegojavierfares.com/super-super-Scratch-Dent-Sandusky-30-Steel-Storage-Cabinet-With-3-Fixed-Shelves-Putty-hot-choice/