B. 



Anchor Performance 



1. General Behavior (Refer to Saurwalt, 1971, 1972a, 1972b, 1973, 

 1974a, 1974b) 



Seafloor Type - [Performance as defined by broad seafloor categories.] 



Mud or silt - Wide range in anchor performance; "mud" strength 



varies considerably. 

 Sand - Performance reasonably consistent provided anchor penetrates; 



dense sand can be difficult. 

 Clay - good holding capacity. 

 Coral - Function if anchors snag an outcrop, fall in crevice, 



blasted in. 

 Rock - Unsatisfactory. 



Layered (sand/clay/mud) - Performance erratic for high efficiency 



anchors . 



Roll Stability 



Anchors improperly stabi- 

 lized will roll limiting 

 peak capacity. 

 If an anchor rolls in a 

 mud or clay, the anchor 

 will come out with a "mud 

 clod" fixing the fluke 

 preventing re-embedment. 



Erratic/poor performance 

 can sometimes be corrected 

 by extending stabilizers. 



SECTION A-A 



ST(Cl flATI 



Navy anchor. 



19 



