Accession Number:

ADA254144

Title:

Dredge Mooring Study Conceptual Design, Phase 1 Report

Descriptive Note:

Final rept.

Corporate Author:

SOFEC INC HOUSTON TX

Personal Author(s):

Report Date:

1992-05-01

Pagination or Media Count:

83.0

Abstract:

This report describes the conceptual design of a direct pump-out facility for Corps of Engineers hopper dredges. Operational conditions were a significant wave height of 6.0 ft, wind velocity of 30 knots, and a current velocity of 2 knots. The mooring system was designed for operation in a minimum depth of 30 ft and a maximum depth of 45 ft. The following operational criteria were also required for the mooring design a transportation by truck or rail, b rapid assembly with little or no diver support, and c installation with a minimum of lift support. The report examines five alternatives a a guyed tower, tension leg platform TLP, b a single anchor mooring SALM, c a three-leg catenary anchor leg mooring CALM, and d a four-leg CALM. The four-leg CALM was selected for further study because it best met the operational criteria. To accommodate truck transport, a 28-ft-long, 11-ft 6-in.-high, 7-ft 6-in.-deep capsule buoy was designed. The entire system buoy, fluid swivel, mooring table, and buoy piping is capable of being transported on six flatbed trucks or a single 40- by 120-ft deck barge.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Civil Engineering
  • Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE