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Step 1<br />

GEMINI takes 55Kg<br />

weight attached to 80m<br />

of sinking rope, tows<br />

VHS out to the extent<br />

of point A and drops<br />

weight to sea-bed.<br />

Step 2<br />

47Kg weight attached at<br />

point A and lowered to<br />

sea-bed.<br />

Step 3<br />

25kg weight attached at<br />

point B and lowered to<br />

sea bed.<br />

Step 4<br />

Inflatable buoy, with<br />

attached sinking rope,<br />

are detached from the<br />

marker floats which move<br />

across surface as vas<br />

adopts vertical<br />

attitude. Rope sinks<br />

when detached fro. buoy.<br />

Fig. 3.5<br />

81<br />

Inflatable buoy<br />

.l.<br />

47kg<br />

55kg<br />

GEMINI<br />

" Water<br />

depth<br />

60-65m

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