Janko,
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C&C Yachts - C&C Photo Album & Resource Center. Lots of C&C owners and a great list serve as well as photos and instructions. The
hatch lense probably needs to be replaced. You can get them from Atkins & Hoyle or take it to a good plastic shop. The leak could be from the windows. South Shore Yachts in Ontario might be able to sell you new frames if that is what you need.
Joel