Special Projects

SBX In-Water Mooring Installation

Customer:
U.S. Missile Defense Agency

Contract Amount:
$22,800,000

Location:
Adak, AK

Project Duration:
08/2006-07/2007

Project Description:
This project involved stabilizing a platform to serve as the “home port” for a Sea-Based X-Band (SBX) Radar vessel that is part of the Ballistic Missile Defense System. The platform serves as a mooring station for the semi-submersible vessel between sailings.

The mooring system consists of eight 75-metric-ton anchors attached to the sea floor, providing maximum safety for the vessel in the sometimes harsh Aleutian Island weather. The permanent mooring was designed as a conventional, centenary anchor leg system with eight legs. The legs consisted of eight anchors — the largest conventional anchors ever made — along with associated mooring chain and other tension members and buoys.

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