DEPTH - FATHOMS 
INSTRUMENTS FOR OBSERVING 33 
MINIMUM CABLE LENGTH - FATHOMS 
200 400 600 800 1000 
For 7x7x 4 Stainless Steel Cabie 
120’ ROBERTS RADIO BUOY 
IMPORTANT: oF 
__ Cable length used should be .__ 
50 to 100 percent greater 
* than the minimum as shown 
_ by this diagram. 
Limiting 
| Condition 
DEPTH 1044 
CABLE 2095 
FIGURE 23.—Curves of minimum cable requirement, 120-inch buoy. 
