FEASIBILITY STUDY AND COMPARATIVE ANALYSIS OF DEEP OCEAN LOAD HANDLING SYSTEMS.
Final technical rept. Oct 68-Jun 69,
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF
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Nine candidate systems for lowering and raising negatively buoyant loads in the deep ocean were compared and evaluated by means of a systems effectiveness model. For both load ranges considered -- 20 to 100 tons and 400 to 600 tons at 6,000 feet -- a lift system employing a ship with pipe string suspension medium was considered to be the most feasible approach. Accurate positioning of heavy modular loads can be most readily achieved by resorting to acoustic devices for guiding the translation and rotation of the surface support craft prior to final emplacement. A manned submersible would serve as a useful guidance backup system. The transport of 10- to 30-ton loads for short distances in the near bottom environment is considered feasible. Final choice between two competing systems, a heavy-life submersible and a hydrocopter, must await further definition of work missions and load configurations. Author
- Marine Engineering