FIGURE I (. I 



DEEP SEA TRAWL WINCH 



figure i7.1. Incidentally, the winch is rather reliable. It is just re- 

 turning from a full year's cruise without a single breakdown. The 

 thermoprobes on the side of this coring device are an innovation 

 to measure the thermal gradient at the time of coring. Useful infor- 

 mation can be obtained from this data and the thermal conductivity 

 of a piece of this sediment can be measured later. 



We need to extend to deeper layers to see what is under the 

 70-foot depth in the sedinrients. It is rather important. On the 

 other hand, a rig as complicate 1 and as expensive as that used in the 

 Mohole Project will never give us nnuch information about areal 

 distribution. So we need sonnething on the order of a drill that is 

 capable of being carried on an oceanographic vessel, along with the 

 equipment of the other 29 programs that must be carried out as well. 



178 



