winterizing the rig

[jurpo]

hi,
I''m from Finland and now I''m kindly inquiring instructions for my rig (sparcraft). I have a Beneteau First Class Europe - sailboat. Here in Finland is in the wintertime 30 degrees below zero (-30 celcius). I am leaving the mast on the boat standing for whole wintertime, How I should adjust the rig ?
How tight or how loose ? What is the difference of the lenght between aluminum and rod(steel?) in the below zero conditions ?

Thanking in advance
Jussi Laine
email : julaine@utu.fi
tel . +358405851545

[Sailmc]

You want to loosen the rig about 15% to 20%. You don''t want to be able to move it around but you need it to be able to flex in all directions. When the boat is in the water the pressure from the wind is absorbed by hull movement. When you are out of the water the rig needs to flex sufficiently to absorb this pressure. You mention rod steel. If this means you have rod rigging you will need to loosen more since ro0d rigging has less inherent stretch. The mast will expand and contract at a greater rate than the rigging with temperature variation.
P.S. I live in Wisconsin and am familar with this type of weather.