Quality Assurance of the Modified Class CC Mooring Installation at Guam,
Abstract
The mooring location is approximately 500 feet west of the existing 25N/25S mooring. The mooring configuration is a three-legged array with two ground chains per leg as in a DM-26 class CC mooring. Each ground chain terminates in a pair of tandem anchors. At the other end of the six chains legs, the termination is at a common ground rign. A single 15,000 pound (in water weight) sinker is attached directly to the ground ring, and a 3.5 inch riser chain connects the ground ring to a 12 foot diameter buoy. The designed hawser form the buoy to the ship is a dual paralled 4.25 inch diameter Samson 2 in 1 nylon hawser. To install and maintain the moorings in Apra Harbor, PWC Guam uses a YFNB barge as work platform. The barge's deck house has been cut off to provide a 140 feet clear work deck from the stern, forward, to accomplish their work on the moorings, PWC secured a 60 ton, crawler crane to the deck, left of the centerline and at the stern. To the right of the centerline, at the forward end of the work area, PWC secured a 3 drum 10 kip winch. Each of the drums wire ropes passes through its own 5-part block system. The crane and the 3 drum winch are the only pieces of machinery used by PWC to do mooring work.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1980
- Accession Number
- ADA167750
Entities
People
- T. J. O'boyle
Organizations
- Naval Facilities Engineering Systems Command