The cone penetrometer tool used for all tests is an inverted right 

 circular cone with a projected area of four square inches. It was 

 designed with a vertical lip to prevent soil from clogging the space 

 between the cone and transducer and thereby affect axial load measure- 

 ment. Because of this vertical surface area, cone resistance, recorded 

 as axial load, is partially comprised of frictional resistance or 

 adhesion on this vertical surface. Since the maximum anticipated 

 frictional effect is less than 5 percent, it will be neglected. 



Winch System 



The winch, which is used to raise and lower the DOTIPOS platform, 

 consists of three units: a diesel-driven power unit, a dual-drum 

 traction winch, and a single-drum storage unit. Each of these units 

 is mounted separately as shown in Figure 6. 



The power unit hydraulically drives both the traction and storage 

 units, weighs about 8,500 pounds, and has approximate dimensions of 

 4- by 10- by 9-feet high. The unit is driven by a diesel engine which 

 develops 245 bhp at 1,965 rpm. 



The dual-drum traction unit provides for hoisting and controlled 

 payout of cable. It weighs about 11,500 pounds with approximate 

 dimensions of 6- by 8- by 6-feet high. The traction unit develops line 

 pulls of 20,000 pounds at 200 fpm and 1000 pounds at 400 fpm and has a 

 2500-pound line pull braking capacity. 



The single-drum storage unit has the function of stowing the lifting 

 telemetry cable. The storage unit weighs approximately 8,500 pounds 

 and has dimensions of 8- by 10- by 7-feet high. A spooling device Is 

 provided to lay cable on the drum in an orderly manner. Electrical 

 power and telemetry are transmitted through the storage unit by a slip- 

 ring mechanism. 



GENERAL TEST PROGRAM AND PROCEDURES 



A total of eight sets of vane shear and nine static cone penetro- 

 meter tests were performed at two seafloor test sites. Both sites 

 were located in the Santa Barbara Channel off the coast of Southern 

 California (Figure 7). The geographic coordinates of the center of 

 the 100-foot Pitas Point Site (Site 1) are: 34° 16.7'N and 119° 

 24.2'W and of the center of the 600-foot SEACON Site (Site 2) are: 

 34° 15.0'N and 119° 44.0'W. The program of vane shear and cone penetro- 

 meter tests performed at each site is presented in Tables 1 through 4. 

 The tests are listed in chronological order for each tool. 



