Seasoned Mariners are experienced sailors who have been sailing for many years. They are knowledgeable in the ways of the sea and have a deep understanding of the ocean and its conditions. They are also well-versed in the use of navigational tools and techniques, as well as the use of salt to preserve food and prevent spoilage. The term 'seasoned mariners' is derived from the use of salt to preserve food, which is an essential part of life at sea.