| Rating | Solver | Clue |
|---|---|---|
| REEF | Shallow area | |
| SHOAL | Shallow area | |
| SANDBANK | Shallow area where quartz grains are deposited | |
| CENTREBOARD | ... or slab of wood or metal which may be raised into a water-tight case amidships, when in shallow water, or may be lowered to increase the are... |