..and attach it so that the rods pass through the holes in the red connectors.
Next make the frame for the sail
attach it as shown
cover it with thin plastic sheet or paper, and secure with sticky tape.
Make sure that in applying the sticky tape you do not prevent the sail from swinging around the mast.
The mast can now be attached to the front of the deck, as shown.
Make the rudder by adding to a red rod:
1. An orange connector end-on. 2. A yellow rod on the end of the orange connector. 3. Two silver spacers. 4. A white connector. 5. A blue spacer. 6. Three silver spacers. 7. A white connector. 8. Six orange connectors end-on, each with a white rod attached.
Next attach the rudder to the rear of the deck as shown.
To secure the sail:
1. Tie a length of string to the lower white connector on the rudder. 2. Pass the string through the light grey connector at the lower corner of the sail. 3. Pass the string through the upper white connector on the rudder. 4. Attach the string to the yellow rod on the right with a purple clip, as shown, and cut off any surplus string.
The length of the string can then be shortened or lengthened as required when sailing the catamaran, by twisting the yellow rod so that the string wraps around it.
Now build the rudder damper
and attach it to the top of the rudder as shown.
This pushes the rudder down below the water level, and it also makes it slightly harder to turn the rudder, so that the rudder stays in the position in which it has been set.
Your catamaran should now look like this.
Finally, carefully wrap plastic sheet around each of the hulls, as shown, securing it with sticky tape.
Your catamaran is now complete.
To test your catamaran:
1. Take it to an outdoor pool on a day when a light breeze is blowing 2. Place the catamaran in the water, with the wind behind it. 3. Set the rudder straight ahead. 4. Lengthen or shorten the string, so that the sail is at the angle you require. 5. Check that it sails OK, and that water does not leak into the hulls. 6. Experiment with different settings for the rudder, and a variety of sail positions on each side of the catamaran.