Halving the load on the rail, using a 2:1 lead to a magic box. The 2:1 is still popular, though the magic boxes have been replaced by 6:1 wire tackles, running in front of the diagonal bulkheads, on many newer boats.
An Aussie boat with hydraulics on the shrouds. Very shortly after this, the Aussie's went to the low tension rig! I believe none of them use hydraulics now. This may still be an elegant solution for the high tension rigs popular in North America and with some Europeans.
Shrouds go to cars on tracks. This setup was used by Benj (Steve Benjamin), and several others. It makes adjusting shroud tension while racing difficult, but provides an effect similar to changing spreader angle while sailing.
There were several 505s at the 1981 World Championship that had spreader angle adjustable while sailing, though it took a heavier spreader bracket and two more wires running inside the mast to do it.
Waterat delivered an unrigged boat, 7349, to the Worlds. Check out the shine on the oak veneer tanks! Unlike the all wooden boat, this 505 is a wood look boat.
The hull is a honeycomb cored Hamlin, the foredeck and seat tanks are foam or honeycomb cored epoxy kevlar, with oak veneer on the tanks, and mahogany on the foredeck. The diagonal bulkheads, centerboard trunk and thwarts are wood. This boat is still one of the top 505s in California, fifteen years later.
