7/10/2023 0 Comments Code zero sailWhile a fully equipped racing boat might have a number of spinnakers, both symmetric and asymmetric, to cover all courses and wind conditions, cruising boats almost always use an asymmetric, due to the broader application and easier handling afforded by the asymmetric. This makes asymmetrics a better choice on reaching courses than symmetric spinnakers, which excel when running. Asymmetric spinnakers operate more like a jib, generating lift from the side, rather than the top like a symmetric spinnaker. There are two main categories of spinnakers, symmetric and asymmetric depending on whether a plane of symmetry exists for that particular sail. Doing so requires the boat to be anchored by the stern-two anchors are recommended to stabilize the vessel-and requires several crew to manage the sail while someone enjoys hanging from it in the breeze. Any deviations from a smooth curve will cause the airflow over the leeward side of the sail to separate causing a reduction in lift and reduced performance.Ī spinnaker can also be flown at anchor as a source of recreation for people to swing under it. Such a sail will also have a smooth curve when filled, with no bubbles or depressions caused by inconsistent stretching of the fabric. Reaching spinnakers have less camber as they operate within an airflow that generates lift.Ī well designed spinnaker will have taut leading edges when filled leading edges that curl in will both reduce the lift and risk of collapse of the spinnaker. Both lift and drag propel the boat forward when moving with the wind. Symmetrical spinnakers have large amounts of camber, making them nearly hemispherical. Boats using spinnakers during a regatta in Lorient (France).Ī spinnaker is used for sailing with the direction of the wind.
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