The above 4 photos of "Wyvern" topsail Schooner were posted because of the several requests I have received asking about the rig used to tack the overlapping jib...
These are early photos when she still had a raised main hatch, she, has since been modified and the hatch is now flush with the deck but the sail control is unchanged (I like my controls on deck where I can get at them)
Control is by 2 quarter power servos mounted on the underside of the hatch with the sail arm's exposed on deck,--- The after servo controls the main & fore sails it is a single arm servo mounted on the centre line and is connected directly to the fore and main booms (a bowser on the booms allowes the sheets to be adjusted)
Control to the Staysail and the Jib is via a double arm servo (this allows a push me, pull you sheet arrangement) the Stay sail is boomed and the sheets Port & Starb'd are attached to the sail arm.... The Jib sheets are run the same way except, because of the extra length of sheet needed a 2 fold Dutchmans Purchase is used (Sheet runs from the clew of the sail to the arm then forward through a block or eye back to the arm then back forward and is made fast with a bowser ... this rig gives you 3 times as much movement and allows you to use an overlapping Jib...
Jimmy
