Figure 17. AGS display showing 10-foot diameter wooden water tanl< 

 at a depth of 10 feet. (From Reference 20.) 



CONCLUSIONS 



Table 10 summarizes the findings of candidate load guidance and 

 positioning systems. It is the judgement of the authors that positioning loads 

 by movement of the surface support vessel is the most promising system for 

 handling very heavy, negative loads at 6,000 feet. Modular loads would be 

 positioned by this system in the following manner. A sea floor reference 

 beacon will mark the bottom position for the first load. The beacon will 

 direct the lifting vessel's dynamic surface positioning system to a station 

 approximately above the chosen bottom site. The load will be lowered by 



68 



