This work was sponsored by the Ocean Engineering and Construction 

 Project Office, Chesapeake Division, Naval Facilities Engineering Command, 

 as an augmentation of facility construction under the cognizance of the 

 Pacific Division (PACDIV) . Underwater Construction Team One (UCT-One) 

 was responsible for installing the moorings. CEL provided technical 

 representatives to furnish propellant anchor mooring design information 

 to PACDIV, to participate onsite in the mooring installation, and to 

 supervise the operation of the propellant anchor. 



ANCHOR SYSTEM 



The CEL 1 00K Propellant Anchor was developed for the Navy's Supervi- 

 sor of Diving and Salvage to provide salvage anchoring capability at 

 sites where the seafloor was not suitable for drag-burial anchors. In 

 addition, it was desired that it be capable of operating in unconsolidated 

 sediments so that a single system could be carried aboard a salvage 

 vessel (ARS, ATF, or ATS) for use at any site. The initial version of 

 the system was developed by Aerojet-General under contract to CEL between 

 1966 and 1968, as documented by Thomason, et al. (1968) and Naval Ships 

 Systems Command (1970). Subsequently, the system was modified to reduce 

 fabrication costs and to improve firing system safety, as described by 

 Smith (1971). Based upon tests of the modified system, the launch vehicle 

 base was strengthened, and anchor projectiles were modified to function 

 similarly to those proven in tests of the smaller CEL 20K Propellant 

 Anchor reported by Taylor (1976). 



The anchor system (Figure 1) consists of a launch vehicle, a safe- 

 and-arm (S/A) firing device, a propellant cartridge, a projectile assembly, 

 and lines. 



Launch Vehicle 



The launch vehicle consists of a gun mounted atop a quadrapod frame 

 with a square base. It measures about 8 feet (2.4 m) by 8 feet (2.4 m) 

 by 12 feet (3.7 m) high and weighs about 12,000 pounds bare. The gun 

 barrel is a steel forging having the following dimensions: 



Item 



Inside diameter 



Outside diameter 



Overall length 



Internal travel 



Breech diameter 

 (internal upset) 



Dimensions, in. (mm) 



10 (254) 



17 (432) 



42 (1,067) 



36 (915) 



6 (152) 



It is designed to operate with a peak pressure of 35 ksi. A breech 

 block is fitted to the breech and screwed in over the propellant cartridge 

 to contain the propellant gases during firing. The outside of the gun 

 barrel is fitted with four double padeyes for pin connection to the 

 quadrapod legs. These legs are bolted to the ends of four beam sections 



