A more thorough explanation:

The Wisby Laws, also known as the Laws of Visby, were a set of maritime customs and decisions adopted on the island of Gothland in the Baltic Sea. Visby was the main port on the island, and the code was influential throughout northern Europe. It is believed that this code was created after the Laws of Oléron.

The Visby Protocol was signed in recognition of the ancient code, and it amended the Hague Rules. The Hague-Visby Rules govern most of the world's liner trade.

For example, if a shipper wants to transport goods from one country to another, they must follow the Hague-Visby Rules. These rules ensure that the goods are transported safely and that the shipper is responsible for any damages that occur during the transportation process.

The Wisby Laws were important because they helped to establish a set of rules and regulations for maritime trade. They ensured that ships were safe and that goods were transported in a fair and equitable manner.