A hybrid anchor (10) comprises a caisson comprising a lid (35) and a rigid skirt (37) wherein the skirt defines an open end of the caisson and the lid comprises a valve, the skirt of the caisson being configured to engage with a substrate upon which it is placed, thus defining a sealed interior space and, in use, the skirt (37) is induced to sink into the substrate by evacuating the contents of the interior space through the valve. A drilling template is fixed to the lid (35) of the caisson, the drilling template being configured to receive at least one pile (40) at a respective location relative to the caisson lid (35) such that the at least one pile (40) may be driven though the caisson lid and into the substrate at an angle from 90 degrees to the plane of the lid up to an angle avoiding intersection between the at least one pile and the skirt to fix the position of the hybrid anchor within the substrate.