Design and installation of ocean nutrient enhancer, ´TAKUMI´

Author

Tachi, Akira

Author_Institution

Civil Eng. Dept., Toa Corp., Tokyo, Japan

Volume

1

fYear

2004

fDate

9-12 Nov. 2004

Firstpage

340

Abstract

Marino-Forum 21 (MF21, an incorporated association), installed a floating ocean nutrient enhancer, ´TAKUMI´, 25 km off Hitratsuka City in Sagami Bay opening to the Pacific Ocean in a new attempt to develop a fishing ground in May 2003. The enhancer is an offshore structure which measures 213 m in height and 16.8 m in maximum width, and has a displacement of approximately 1,700 t. Construction was especially remarkable for towing a long and large structure in the sea, installing mooring cables in 1,000 m deep water, adopting an upending method to facilitate installation of a long riser pipe with a large diameter, This report describes the designing and installing procedures for ´TAKUMI´, focusing on the three major points.

Keywords

aquaculture; marine systems; oceanographic regions; oceanographic techniques; offshore installations; pipes; submarine cables; 1000 m; 213 m; AD 2003 05; Hitratsuka City; Japan; MF21; Marino-Forum 21; Pacific Ocean; Sagami Bay; TAKUMI design; fishing ground; floating ocean nutrient enhancer; incorporated association; mooring cable/riser pipe installation; offshore structure; upending method; Oceans;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '04. MTTS/IEEE TECHNO-OCEAN '04

Print_ISBN

0-7803-8669-8

Type

conf

DOI

10.1109/OCEANS.2004.1402939

Filename

1402939