INTRODUCTION 



A new propellant -actuated anchor (CEL 10K) has been designed and 

 fabricated for the Chesapeake Division of NAVFAC (Figure 1 ) . The expe- 

 rience gained during the development of the CEL 20K anchor* allowed 

 a straightforward 1 0K anchor design effort. During the testing phase 

 for the CEL 20K anchor, many improvements were envisioned that would 

 simplify operational and handling characteristics and reduce cost; 

 these improvements were incorporated in the CEL 10K anchor design. 

 The anchor is designed to operate at depths of 25 to 20,000 feet (7 to 

 6,100 m) and will develop at least 10,000 pounds (45 kN) of long-term 

 holding capacity in seafloor soils, rock, and coral. Holding capacity 

 will vary between 10 and 50,000 pounds (45 to 225 kN) depending upon 

 seafloor type. 



Because the anchor was designed for lower holding capacity appli- 

 cations, it should be useful for mooring buoys, small vessels, instrument 

 arrays, causeways, and a variety of other surface and subsurface struc- 

 tures. If the anchor is to be used for these applications, it must exhibit 

 advantages over the conventional approaches to anchoring. 



In addition to the characteristic advantages of the direct embedment 

 anchor - such as the ability to resist multidirectional loadings, high 

 anchoring efficiency, reduction in required line scope, and operability 

 in competent seafloors - the CEL 10K anchor was designed to be low in 

 cost and light weight. Total anchor system weight is about 700 pounds, 

 (320 kg) and the system is fabricated for less than $2,500. In shallow 

 water, the cost of expendable components is about $450. 



This report describes the anchor and details the land testing 

 program used to verify gun performance and its first in-water firings. 



DESCRIPTION OF EQUIPMENT 



The anchor consists of two major parts (Figure 2) - the gun assem- 

 bly and the fluke assembly. Table 1 describes the anchor with a sand 

 fluke and a clay fluke attached. The new anchor weighs about 625 to 700 

 pounds (285 to 320 kg) and measures about 6 feet (1.8 m) in overall length 

 with the touchdown probe extended. The design uses stock components and 

 minimizes machined parts, thereby allowing faster and simpler fabrication. 



* R. J. Taylor (1976). Technical Report R-837: CEL 20K Propellant- 

 actuated anchor. Civil Engineering Laboratory, Port Hueneme, 

 CA. 



