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| Cadet Association International | View |
| Calshot Sailing Club | View |
| Cam Sailing Club | View |
| Cambridge University Cruising Club | View |
| Campbeltown Sailing Club | View |
| Canford School Sailing Club | View |
| Cardiff Bay Yacht Club | View |
| Cardiff Yacht Club | View |
| Carlingford Lough Yacht Club | View |
| Carnoustie Yachting And Rugby Club | View |
| Carsington Sailing Club | View |
| Castle Cove Sailing Club | View |
| Challenger Class Association | View |
| Chanonry Sailing Club | View |
| Chapman Sands Sailing Club | View |