Thesaurus Term/Concept: BUOY
| Identifier | 123415 |
|---|---|
| Class | DEFENCE OF BRITAIN |
| Status | Preferred |
| Index? | Yes |
| Scope Note | Blocks of solid concrete, in the shape of a round bottomed cone usually 2 feet 6 inches across x 2 feet 9 inches high. Buoys were mainly used in road blocks intended to impede enemy movement in the event of invasion. |