Table 1. Summary of Operating Requirements for a 

 Seafloor Pile Emplacement System 



Water Depth 



6000 feet 



Verticality Tolerance 



±2 degrees 



Sea State Capability 



Sea State 3 



Capacity - Uplift or Bearing 



150 kips ultimate 



Lateral Load 



75 kips ultimate 



Submerged Weight 



40 kips maximum 



Power Required 



100 HP maximum 



Emplacement Rate 



2 hours maximum to emplace all piles 



Number of Piles 



At least 3 piles placed in proper 





relative position* 



Seafloor Soils Adaptability 



Soft to stiff cohesive soils; loose 





to dense cohesionless soils 



Versatility 



Adaptable to emplacement of more than 





the minimum number of piles; adapt- 





able to changes in plan dimensions 





of structures 



Required Development Effort 



All components should be reasonably 





within the state-of-the-art; minimum 





development time desired 



Complexity 



Minimum number of mechanical operations 





and control functions desired; possi- 





bility of automation 



Ship Support 



Single ship or single tug-barge 





combination; approximately 500 sq. 





ft. deck space and 20-ton crane 





required 



* The jack-in system requires 5 piles for operation, 



