2098946-A is referenced by 8 patents.

In an elevated sail assembly, the sail is connected by shroud lines 7 to a pulley system 5. Ground controlled flying lines 3 pass around the pulley and said control lines 8, 9 are connected between the sail and the flying lines. Movement of the flying lines 3 around the pulley causes the control line to alter the flying characteristics of the sail.

A tethered sail assembly for marine or other uses
Application Number
GB19820014702 19820520
Publication Number
2098946 (A)
Application Date
May 20, 1982
Publication Date
December 1, 1982
British Petroleum Co
B64C 31/06
B63H 09/04
B64C 31/00
B63H 09/00
B64C 31/06
B63H 09/06
View Original Source Download PDF