There is discussed a sail apparatus having a sail with one or more battens. A furling system varies the area of deployed sail between a furled state and an unfurled state by rotating the sail about the leading edge. At least one batten comprises a single extendible sheet member operable to switch between a rigid three-dimensional longitudinal state and a coiled planar state, such that a deployed portion of said at least one batten is in said rigid, three-dimensional longitudinal state and a furled portion of said at least one batten is in a coiled planar state. The batten is resiliently baised towards the leading edge of the sail, while allowing movement of the batten towards the trailing edge of the sail during furling.
Sail apparatus and extendible member suitable for use in the sail apparatus
2018-07-04
Patent
Electronic Resource
English
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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