 The four sails were made . The originals being slightly different pairs . Those on the inner stock having bays of 3 feet ( 910 mm ) pitch and those on the outer stock having bays of 3 feet 2 inches ( 970 mm ) pitch . It was decided that the new sails would be identical , at the larger pitch . Four 27 feet ( 8 @.@ 23 m ) long <unk> were cut from a <unk> of pitch pine obtained from a demolished <unk> at Bury St <unk> . The <unk> are 6 inches ( 150 mm ) square at their inner end . <unk> bars and <unk> were made from modern pitch pine , selected for quality . The <unk> for the sail bars were cut . That at the heel of the sail being at 27 ° and that at the tip being 15 ° , decreasing by 1 ½ ° at each sail bar . Three of the four sails had been completed at the end of the work in . 
