A Cable Laying Facility

Ehrbar, R. D.

doi:10.1002/j.1538-7305.1964.tb04086.x

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Long Lines (Figure 16) was considered a new innovation in cable laying and repair ship design (Ehrbar, 1964). Built in Hamburg, West Germany, this was a purpose-built vessel for laying and repairing SD submarine cable.…”

Section: Shipsmentioning

confidence: 99%

“…The new vessel was necessary to store, transport, test, and deepwater-deploy the new repeaters with electron-tube amplifiers that were housed in rigid pressure vessels. The string of 183 SD repeaters required powering at a direct current (DC) of 0.4 amperes (A) by applying high voltage of opposite polarity from the two terminals of the trans-Atlantic link (Ehrbar, 1964).…”

Section: State-of-the-art Capability: 1965mentioning

confidence: 99%

See 1 more Smart Citation

Technology in Undersea Cable Systems: 50 Years of Progress

Thomas¹,

Rapp²,

Spalding³

et al. 2015

mar technol soc j

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A B S T R A C TUndersea cable systems provide a comprehensive example of how technology has changed during the 50-year publication history of the MTS Journal. From the 125-μm-diameter glass optical fiber to the 12,000-ton cable ships, the design, manufacture, and installation of undersea communication systems rely on a remarkable intersection of technologies. The technologies supporting this industry have progressed significantly in many aspects. In 1965, coaxial analog systems were transmitting 128 three-kilohertz channels that were amplified by vacuumtube-based amplifiers for consortiums of national telephone companies over simple point-to-point links. Today, a fiber-optic cable transmits 10 million times as much traffic, that is, tens of terabits of information per second, amplified by reliable erbium-doped fiber amplifiers, as part of mesh networks serving datacom, offshore oil and gas facilities, and scientific applications, each under a variety of ownership and operational models. Installation technology has changed along with the transmission technology, with advances in cable route surveys, ship positioning, cable burial, and use of remotely operated vehicles. System maintenance has become a much more practical endeavor since the advent of universal joint technologies and methodologies. Wet-mateable fiber-optic connectors enable remote, modular, subsea connection scenarios that serve a variety of applications. This paper reviews some of the history and evolution of the technology used in undersea cable systems and addresses future industry trends.

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Section: Shipsmentioning

confidence: 99%

Section: State-of-the-art Capability: 1965mentioning

confidence: 99%

Technology in Undersea Cable Systems: 50 Years of Progress

Thomas¹,

Rapp²,

Spalding³

et al. 2015

mar technol soc j

View full text Add to dashboard Cite

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SF System: Transmission Tests, Computations and Equalization During Installation

Hirt¹,

Oldfather²

1970

Bell System Technical Journal

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The SF Submarine Cable System relies on equalization of accumulated misalignment at regular intervals along the length of the system to achieve performance objectives. Transmission tests of the undersea system during installation are required to implement this equalization. This article describes the tests that are conducted and the computations used to select equalizer settings just before an equalizer is overboarded.

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SG Undersea Cable System: Installation and Maintenance of the Undersea System

Cosier¹,

Davies²,

Dawson³

et al. 1978

Bell System Technical Journal

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Many changes were made in Cable ShipLong Lines to facilitate in stallation and maintenance ofSG cable and repeaters. This paper de scribes new equipment provided for the ship and modifications made to existing equipment.Both transmission equipment and cable and repeater handling facilities are discussed. I. BACKGROUNDA significant p a r t of the development of a new undersea cable system is involved with t h e e q u i p m e n t required to install and maintain t h e system. M u c h of t h e basic work concerning cable payout and repeater handling was done as part of the earlier SD Submarine Cable System and the design of Cable Ship Long Lines. 1Even so, for the SG system, many specific changes were necessary. This paper describes the most important ones. T h e areas or conditions t h a t called for revision or new design can be summarized as follows: (i) Electrical (a) T e s t sets (b) Power feeding e q u i p m e n t (c) Transmission e q u i p m e n t (d) C o m p u t e r facility (e) Repeater monitoring set (ii) Environmental (a ) R e p e a t e r t e m p e r a t u r e control a n d m e a s u r e m e n t (b) Cable t e m p e r a t u r e control and m e a s u r e m e n t (Hi) Physical and Mechanical (a) Increased cable tensions and cable size 2523

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A Cable Laying Facility

Cited by 3 publications

References 7 publications

Technology in Undersea Cable Systems: 50 Years of Progress

Technology in Undersea Cable Systems: 50 Years of Progress

SF System: Transmission Tests, Computations and Equalization During Installation

SG Undersea Cable System: Installation and Maintenance of the Undersea System

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