coachroof 
noun
A raised part of the cabin roof of a yacht.The only holds offered were the handrail on the coachroof and the small cleat amidships....
- This picture was taken in June 2006 during painting of the saloon, aft cabin coachroof and coamings.
- The half inch Lexan is heated in an oven and then placed on the coachroof to attain the proper shape.