integral multiple of the length of the boom floats at which the boom 

 could be easily folded without damage to flotation. 



20. The FTB should be stored on land when not in use. 



Evaluation of the Mooring Systems 



Description of the Systems 



The three mooring systems evaluated in this test program were 

 manufactured by Seaward International, Inc., Falls Church, Virginia. 

 Each mooring system consisted of an anchor, a buoy, a crown buoy, and 

 appropriate size lines. The three mooring systems were designed for 

 nominal holding forces of 2,000 lb, 5,000 lb, and 10,000 lb which, 

 for simplicity, will be identified as small, medium, and large, 

 respectively. The buoys of these mooring systems were designed to 

 have an additional 100-percent reserve buoyancy to prevent submergence 

 of the boom. The Danforth anchors of the small, the medium, and the 

 large mooring systems weighed 12 lb, 40 lb, and 60 lb, respectively. 

 The three mooring systems are shown on pallets in Figures 21, 22, and 

 23, whereas their design details are given in Figures 24, 25, and 26. 



Description of the Tests 



The test of the mooring systems consisted of several elements which 

 are listed in WBS-6 of Appendix A. To complete these tests, the three 

 mooring systems were deployed in and retrieved from the Port Hueneme 

 Harbor using the UTB as well as the FTB. The 900-ft long mixed boom 

 was used to simulate oil containment aro\ind a ship between the pier 

 on one side and the boom on the other side, and also to simulate 

 surrounding an oil slick in the middle of a harbor, away from a pier 

 or other structures. The last element consisted of dragging each 

 anchor on the sandy Port Hueneme beach to determmine its holding capacity, 



The deployment and retrieval procedures, the difficulties 

 encountered, and the suggested modifications are given below. 



Deployment of the Mooring System using a Utility Boat 



Of the three mooring systems, only the small mooring system was foxind 

 to be deployable from the UTB. The medium and the large mooring systems 

 could not be safely deployed from this boat because of their size and 

 weight. 



Before deploying the small mooring system, it was decided to remove 

 the mooring line from around the buoy and have it in a coiled form on the 

 UTB with reverse twists in the line. This was felt to be a safer, less 



25 



