FIELD: river and sea floating marks. SUBSTANCE: signal buoy is hermetic multi-tier sectional structure made of used tyres of various sizes. Housings are filled with moisture-proof material of relatively low specific gravity. Case containing power supply unit for signal equipment is located in above-water portion of buoy which is assembled of tyres of lesser diameter. EFFECT: enhanced reliability. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SIGNAL BUOY | 1993 |
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