Deep Water Single Point Mooring Design

reportActive / Technical Report | Accession Number: ADA286939 | Open PDF

Abstract:

This report presents the results of a feasibility study of single point mooring SPM systems for the Mobile Offshore Base, a very large semi- submerged platform, in up to 10,000 ft 3000 m water depth. The MOB will use the mooring in mild environments. Three moorings were investigated Single Catenary Leg Mooring SCLM, Multi-Catenary Anchor Leg Mooring MCALM, and Catenary and Single Anchor Leg Mooring CASALM. A force-deflection analysis computer program was written to analyze the CASALM and then adapted for the other moorings. Maximum mooring forces were predicted with the MOB in various sea states. The SLCM appears to be the most feasible mooring for the MOB. It can moor the MOB in sea state 3 without thruster assist, it is relatively inexpensive, and it is easy to install. The SCLM may consist of only a short chain attached to the MOB, a polyester rope extending down almost to the sea floor A vertical uplift anchor might be used to further limit the motions of the MOB. This report includes Derivation of equations Mooring computer program, description of program, and users guide Information on high holding, vertical uplift resisting anchors and Information on synthetic fiber rope for deep water mooring

Author(s):
Flory, John F. ; Mckenna, Henry A.
Author Organization(s):
TENSION TECHNOLOGY INTERNATIONAL INC WESTON MA
Descriptive Note:
Final rept. Apr 1995-Apr 1997
Supplementary Note:
Included with ADM000791.
Pagination:
0228

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TTI/NSWC-96-01, NSWCCD/TSS-CR-97-008
Contract/Grant Number(s):
N00167-95-C-0059
Monitor Series:
CR-97-008, DARPA
 Subject Terms
Joint Capability Areas:
JCA_4.6_Engineering; JCA_4.6.1_General Engineering; JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_5.1.1_Establish and Maintain Unity of Effort with Mission Partners; JCA_5.1_Organize; JCA_6_Net Centric; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_6.4.1_Secure Information Exchange; JCA_5.3.3_Develop Strategy; JCA_4.1_Deployment and Distribution; JCA_6.4_Information Assurance; JCA_6.3.3_Spectrum Management; JCA_1_Force Support; JCA_6.1.1_Wired Transmission; JCA_1.2_Force Preparation; JCA_4_Logistics; JCA_1.2.5_Lessons Learned
Modernization Areas:
Microelectronics
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*COMPUTER PROGRAMS, *FEASIBILITY STUDIES, *MOORING, *DEEP WATER, COMPUTER PROGRAM DOCUMENTATION, SYNTHETIC FIBERS, SEMISUBMERGED, ANCHORS(MARINE), SEA STATES, PLATFORMS, ROPE
Field(s)/Group(s):
Physical and Dynamic Oceanography, Computer Programming and Software, Marine Engineering
Keyword(s):
SPM(SINGLE POINT MOORING), CASALM COMPUTER PROGRAM FORCE DEFLECTION ANALYSIS, CASARM(CATENARY AND SINGLE ANCHOR LEG MOORING), SCLM(SINGLE CATENARY LEG MOORING), MCALM(MULTI CATENARY ANCHOR LEG MOORING), MOB(MOBILE OFFSHORE BASE), PE64705D
Report Date:
1997 Sep 10