On the Design of Mooring Lines for Deep Water Applications

[+] Author and Article Information
J. M. Niedzwecki, M. J. Casarella

Mechanical Engineering Dept., Catholic University of America, Washington, D. C.

J. Eng. Ind 98(2), 514-522 (May 01, 1976) (9 pages) doi:10.1115/1.3438931 History: Received July 31, 1975; Online July 15, 2010


As ocean engineers begin to extend their analytical and design capabilities from the shallow regions of the oceans to the deep regions it becomes necessary to examine the established computational algorithms and determine to what extent they can be applied to problems of current interest. In this spirit, this paper generalized the catenary equations for inextensible mooring lines, by examining them in a dimensionless form, which allows the generation of certain design curves applicable to a broad class of naval off-shore operations. As an example, candidate mooring lines for an offshore platform are considered in water depths ranging from 1000 to 4000 ft with the maximum tension prescribed at 5 percent excursion from station. The candidate mooring lines consist of single component (all wire rope, all chain) as well as multiple component (wire rope/chain) combinations. For this example it was observed that for wire rope/chain mooring lines a large restoring force could be obtained and that the magnitude of the restoring force was dependent upon the depth of water and the amount of wire rope outboard of the offshore platform. Further it was observed that certain wire rope/chain combinations offer some desirable characteristics as the water depth increases.

Copyright © 1976 by ASME
Your Session has timed out. Please sign back in to continue.






Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In