Nape piercing
Somewhat less common are surface anchors, commonly made from surgical implant-grade titanium. A surface anchor has two parts: a base or foot which is inserted under the dermis during the piercing process and which incorporates a stem exposed to the surface, and a decorative disc or ball of jewelry which typically appears flush with the surface of the skin. Surface anchor nape piercings are most commonly found placed symmetrically on either side of the spine at the nape.
Offshore embedded anchors
Anchor piles are typically designed to resist both horizontal and vertical loads. The axial capacity of the pile is generated by friction along the pile-soil interface while the lateral capacity of the pile is generated by lateral soil resistance, whereby the point of rotation is critical to optimising its lateral resistance. As a result, the location of the padeye is placed such that the force from the catenary or taut mooring will result in a moment equilibrium about the point of rotation, mobilising the optimal lateral soil resistance.