My Nacra 5.7 has a 29'2"mast (exclusing the mast base and the mast head.
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<br>The diamond wires start at 18" from the base, there are 108" to the spreaders and 108" from the spreaders to the top end of the diamond wires
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<br>The shroud are located at 21'2" (20" above the top end diamond wires)
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<br>My suggestion is the following:
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<br>If you have the mast base, simply order the proper length of extruson for your sail and find a mast head that fits. Most mast repair shop can order the anodize mast extrusion of the proper lenght and they could even build one for you.<br><br>Charles Leblanc [color:blue] Nacra 5.7 #123 </font color=blue>