The Imenco Guidepost Extensions are used for installation on top of a guidepost for increasing the guiding length. The extensions have a receptacle on top for mounting of a guidewire anchor or a lifting anchor and will normally be deployed and retrieved using the guideline. The lower end of the Guidepost Extension Anchor Releasable (GPEAR) has an integrated lock down anchor and an internally profiled skirt section that mates the corresponding post top, thus providing a strong connection that can take tension and side loads. The extension will self-align to the post when entering and the anchor will automatically engage the guidepost top when fully landed.