What does the term 'pier' refer to in nautical terms?

The term 'pier' in nautical contexts specifically refers to a structure that is built perpendicular to the shoreline. Piers serve multiple purposes, including providing a docking area for boats and ships, creating a platform for fishing, and offering recreational space for pedestrians. Their orientation allows vessels to approach the structure directly from the water, making it easier for loading and unloading goods or passengers. In contrast, other structures that may be parallel to the shore are typically described as wharves or docks, not piers, which further emphasizes the distinct definition of a pier.