provided by laboratory tests on cores will be made. 

 Attempts will also be made to determine the applicability 

 of sub-bottom sounding techniques to the indirect deter- 

 mination of in-situ sediment properties. 



5 . Lights, Beacons, and Benchmarks . 



a. Work Area Illumination: Fixed lighting units, portable 

 moored (buoyant) lights, and lighting units for use 

 with mobile equipment will be designed, fabricated, 

 tested, and installed as appropriate. 



b. Benchmarks: A suitable benchmark device will be 

 developed. Benchmarks or beacons which can be 

 detected from surface vessels and submersibles will 

 be placed to adequately mark the site. They will be 

 placed by a submersible which will position them as 

 closely as possible on a geographic reference and 

 relative to one another to accurate ranges and bearings. 



II. Site Preparation and Construction Subsystem (WBS 2.1300) 



A. Deep Ocean Energy /Power Generation, Transmission, and 

 Conversion (WBS 3.1320) 



1. Power Transfer from Surface Ship . As separate experiments 

 or as part of any other experiment, power will be trans- 

 ferred at one stage of SEACON from the surface. A pro- 

 tected cable system running from the surface to the bottom 

 work unit will furnish electrical power. The system may 

 have connectors suitable for manipulation by small sub- 

 mersibles or for being remotely joined. Hydraulic devices 

 will be utilized. The serviceability of such a system 

 will be tested under these severe conditions. 



2. Radioisotope Power Devices . RPD ' s in the 1- to 35 -watt 

 power range may be used for charging batteries on the 

 seafloor. The batteries will be supplying power to in- 

 struments, recorders, acoustic pingers or flashing 

 beacons. Both the pingers and the beacons will be useful 

 in site surveying, local navigation, orienting to the 

 surface, and for returning to the seafloor installation. 

 The light would be visible to a few hundred feet and the 

 sonar pulse over large distances. 



B. Bottom Stabilization Subsystems (WBS 3.1340) 



1. Foundations . 



a. Foundation designs: Several foundation designs 



185 



