"Under the weather" is a maritime terminology. It is used to describe the location or position of a person or object on a ship that is facing or exposed to the windward side or adverse weather conditions. It typically refers to being on the side of the ship where wind, waves, and spray are prevalent. When a crew member is assigned to work "under the weather," it means they are stationed on the exposed side of the vessel, often on the deck or in an area where they are more susceptible to the elements. This duty may involve monitoring weather conditions, maintaining a lookout, or performing other tasks that require being on the weather side of the ship.