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| Corinthian Otters | View |
| Corus Sailing Club Margam | View |
| Cotswold Sailing Club | View |
| Cove Sailing Club | View |
| Covenham Sailing Club | View |
| Craigavon Lakes Sailing Club | View |
| Craignish Boat Club | View |
| Cramond Boat Club | View |
| Craven Sailing Club | View |
| Creeksea Sailing Club | View |
| Crosby Sailing Club | View |
| Croydon Schools Sailing Association | View |
| Cushendall Sailing And Boating Club | View |
| Dabchicks Sailing Club | View |
| Dale Yacht Club | View |