STATO Anchor in Mud 



- Graph shows trajectory of anchor embedment in soft mud (Puget 

 Sound) . 



- Extended stabilizers (about 30% increase) needed to maintain 

 stability (6,000 lb STATO with standard stabilizers rolled during 

 embedment) . 



- Majority of load carried by chain. 



«> 











mooriftg 



fff f idency - Z\ * 





- 



EO 



. 



y^""^^ ''"™'°*°*^ 



and srK^r load) 



' chain dres on bonon 

 BititrBcled from de=t: \ 

 tD calculew effidciKv- 



^o„ 



- 



1 



y 













l« 



^^.--^ 











- 





__,--- ' 





^^ ' 



a:>cin>r (alone) 







20 



•^^^ 







•fftciency - lO.B 

 r 1 



1 



- 



^ 



5 10 15 



» 2S 30 S 40 



45 50 



55 eo 



GS 



7 



T«t No. 23 



AnehwTvpe: Suno with l8->n. 



itabili 



Stockless Anchor in Mud 



Sk ftocfclm 

 w/iubiliztn 

 w/liud flukn 



w/nibiJizsn 

 w/movuM fli>kM 

 Sk nocktra wAnovubtc 

 w/movMble f lukti 





Dvpth ID Crown 



Moorulg 

 Effick«cy 



1B.1 ft 



E.I 



B 



lOin 



16 



C 



- 





3. Chain Capacity (Refer to Cole and Beck, 1964; and Taylor, 

 1980a, 1980b, 1980c) 



- Chain efficiency varies considerably for "similar" soil types. 

 sand - efficiency of 1 to >3 depending on density 

 mud - efficiency of 0.4 to 1.1 depending on strength and 

 clay content. 



22 



