A Design Procedure for Moorings with Restricted Watch Circles,

Abstract

This paper demonstrated a rational process for the design of moorings which require restricted watch circles. A systematic approach relating buoy deflection, water depth, anchor drag, leg pretension and other physical parameters is presented. The result is a pretensioned mooring which meets the performance requirements of a reduced watch circle and allows for the unknown anchor drag distances which arise from the geotechnical uncertainties of the site. This approach has been sucessfully used by the Navy to design and install moorings for ammunition barges in Puget Sound, WA. It is not covered in standard Navy morring design manuals, nor is it detailed in other port facilities design texts. Previous methods have not addressed the relationship between anchor drag and pretension forces. This method is an invaluable aid to the designer of a restricted watch circle mooring since it can easily be coded for a hand held calculator or a computer. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 09, 1983
Accession Number
ADA168732

Entities

People

  • Theodore P. Jones
  • Thomas J. O'boyle

Organizations

  • Naval Facilities Engineering Systems Command

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Ammunition
  • Availability
  • Calculators
  • Catenaries
  • Civil Engineering
  • Classification
  • Computers
  • Construction
  • Deflection
  • Design Criteria
  • Displacement
  • Engineering
  • Materials
  • Navy
  • Puget Sound
  • Security
  • Standards

Readers

  • Naval Architecture and Marine Engineering.
  • Oceanography.
  • Systems Analysis and Design