Catalina 250 Owner's Manual page 20

3. Once the mast is straight side to side, increase tension of upper shrouds taking an equal number of
turns per side, until the fore and aft pre-bend induced reaches approximately 1 ½ inches.
4. The lower shrouds should be adjusted slightly looser than the uppers. The shrouds will help
control the amount of pre-bend in the rig.
NOTE: Rigging tensions may be measured with LOOS & Co. Model B tension gauge.
Catalina 250 Owner's Manual
Page 19