A fleet is a group of ships that are owned and operated by the same organization or nation. The phrase "fleet of ships" refers to a collection or group of vessels that are owned and operated by the same entity, such as a navy or shipping company. These ships may be used for various purposes, such as transportation of goods or people, military operations, research expeditions, etc. The phrase is often used to describe a large number of ships that are operated together as part of a single organization.