A more thorough explanation:

libera batella

Libera batella is a Latin term that means "free boat". In history, it referred to the right to fish in certain waters using a boat without any restrictions. This right was also known as free fishery.

During the medieval period, the lords of the manor granted libera batella to their tenants, allowing them to fish in the nearby rivers and lakes without paying any fees. This helped the tenants to supplement their diet with fish and earn some extra income by selling the surplus catch.

Another example of libera batella is the right of navigation in international waters. Ships from any country can sail through these waters without any hindrance or payment of tolls. This freedom of navigation is essential for international trade and commerce.

These examples illustrate how libera batella was an important right that allowed people to access and use natural resources without any restrictions or barriers.