M G Fagot

Bio: M G Fagot is an academic researcher from United States Naval Research Laboratory. The author has contributed to research in topics: Coaxial cable & Underwater. The author has an hindex of 1, co-authored 1 publications receiving 1 citations.

Development, Testing, and Operation of a Large Suspended Ocean Measurement Structure for Deep-Ocean Use

Abstract: : A large, suspended ocean measurement structure was developed and operated. The structure was a tripod configuration 5100 m high with a base footprint of 6190 m, all of which is suspended by a single 6150-lb buoyant float. The three 6200-m-long legs contained environmental measurement instrumentation and engineering sensors located in the top 2150 m of the legs. Communications with the system was via a single steel coaxial cable, which also moored the tending vessel during operation. This paper focuses on the ocean engineering for developing, testing, and operating the system. A new, lightweight cable design facilitated storage, deployment, and retrieval of more than 18,600 m (10 nmi) of cable from a relatively small, 210-foot-long tending vessel. The deployment scenario was optimized to allow this single vessel to transport and deploy over 67 tons of system equipment. An acoustic positioning system was employed to 'fly' the 7000-lb anchors to precise bottom locations. The system was the largest ocean measurement structure to be successfully deployed in the deep ocean (5200 M).

A Large Moored Tripod Structure for the Deep Ocean

Abstract: : A large, moored tripod oceanographic measurement was fabricated and deployed in the deep ocean. The structure was 5100 m high with a base footprint of 6190 m, all suspended by a single 6150-lb buoyant float. The three 6200-m- long legs contained environmental measurement instrumentation in the top 2150 m of each leg. A lightweight cable design facilitated storage, deployment, and retrieval of more than 27,700 m (15 nmi) of cable and mooring from a relatively small, 210-ft-long tending vessel. Communications with the system was via a single 9100-m-long steel coaxial cable, which also moored the tending vessel during operation. Each leg was moored to the bottom with a 7000-lb anchor. The equipment was deployed in the most efficient way possible to allow this single tending vessel to transport and deploy over 67 tons of system equipment. This paper focuses on describing the mooring hardware components and the techniques for deploying this large, moored, tripod structure.