| Year | 1927 |
| Date | 11-Aug |
| Volume | 57 |
| Issue | 1,370 |
| Page | 138 |
| Category | Model Marine Notes |
| Part | 3 |
| Title | Model Yacht Design |
| Author | "Kappa" |
| Notes | The Keel. Diagrams explaining how the wind produces motion of a sailing yacht, types of keel, showing why stern wave in formed when boat is travelling heeled, various type of keel |