The development of deep water mooring system and its mooring foundation has become a key issue in the development of clean energy "offshore wind power" projects. The drag embedment anchor

owing to its high bearing capacity and ease of installation

presents promising prospects. A prediction model for the trajectory

pitch angle and capacity of the anchor in layered soil

considering the effect of shank

is established based on the upper limit analysis. Verification of the model using existing model tests demonstrates that the trajectory prediction error of the model

accounting for the shank effect is limited to 13.5%. Furthermore

compared with the model that does not consider the shank effect

the trajectory and angle prediction error are reduced by 78.32% and 36.9% respectively. The strength

thickness and depth of stiff layer jointly restrict the embedding capability of the anchor. The influence of strength is found to be the most significant

with a higher strength ratio leading to a shallower embedding depth until the stiff layer becomes impenetrable. Additionally

greater depth is associated with increased bearing capacity. When the stiff layer can be penetrated

depth has minimal impact on trajectory and angle. However

when the stiff layer cannot be penetrated

the greater depth will result in a deeper embedment depth and smaller final angle. Lastly

the thickness of the stiff layer is found to positively correlate with the bearing capacity during the embedding process.