| Solution | Length | |
|---|---|---|
| 3 letters | ||
| dam | 3 | |
| bar | 3 | |
| 4 letters | ||
| weir | 4 | |
| wall | 4 | |
| shut | 4 | |
| reef | 4 | |
| work | 4 | |
| rail | 4 | |
| gate | 4 | |
| stop | 4 | |
| 5 letters | ||
| scarp | 5 | |
| fence | 5 | |
| hedge | 5 | |
| shoal | 5 | |
| grate | 5 | |
| 6 letters | ||
| ZIP UP | 6 | |
| ABATIS | 6 | |
| zipper | 6 | |
| centre | 6 | |
| sconce | 6 | |
| septum | 6 | |
| screen | 6 | |
| 7 letters | ||
| sealoff | 7 | |
| railing | 7 | |
| seawall | 7 | |
| Railrig | 7 | |
| redoubt | 7 | |
| rampart | 7 | |
| 8 letters | ||
| division | 8 | |
| stoppage | 8 | |
| stockade | 8 | |
| blockade | 8 | |
| obstacle | 8 | |
| 9 letters | ||
| allotment | 9 | |
| roadblock | 9 | |
| enclosure | 9 | |
| 10 letters | ||
| preventive | 10 | |
| separation | 10 | |
| interspace | 10 | |
| protection | 10 | |
| stone-wall | 10 | |
| 11 letters | ||
| compartment | 11 | |
| 12 letters | ||
| distribution | 12 | |
| 13 letters | ||
| STRANGULATION | 13 | |