Hawaii Deep Water Cable Program, phase II-C task 4 : Second bottom roughness survey

Abstract

The following were the goals for the second Alenuihaha Channel Bottom Roughness Survey: 1. Find the "best" path possible, for one cable, through the areas of the Alenuihaha Channel.crossing that were determined by the first cruise to be the most difficult. These areas were designated as A and B and are illustrated in Figure 2. The "best" cable path is the path with no unacceptable cable spans or cable bend radii and requiring the least difficulty for cable laying that can be found within the survey time and equipment constraints. 2. Collect sufficient data on the worst portion of the best cable route such that the cable laying requirements can be defined. Detailed bathymetric, roughness and path width information is necessary to adequately determine the required cable laying control for a commercial deployment. It was therefore a requirement of the second survey to select a cable path such that a more concentrated data collection effort could be made along that selected path. 3. Find parallel paths for an additional two cables.