Polyurethane coating compositions and their use as gel coats

A coating composition comprising:

• (a) an isocyanate-reactive component comprising a polycyclic polyether polyol with a hydroxyl functionality of 2 to 2.5 and a number average molecular weight of 200 Da to 400 Da, wherein the polyether polyol is a reaction product of a reaction mixture comprising:
• (i) a polycyclic polyol starter comprising a tricyclodecane unit, a bicyclodecane unit, a norbornane unit, a bicyclooctane unit, a bicyclononane unit, an isosorbide unit, or a bicycloundecane unit, and
• (ii) an alkylene oxide;
• and
• (b) an isocyanate-functional component comprising a non-aromatic polyisocyanate.