Permanent anchors These are used where the vessel is permanently or semi-permanently sited, for example in the case of lightvessels or channel marker buoys. The anchor needs to hold the vessel in all weathers, including the most severe storm, but needs to be lifted only occasionally, at most – for example, only if the vessel is to be towed into port for maintenance. An alternative to using an anchor under these circumstances, especially if the anchor need never be lifted at all, may be to use a pile that is driven into the seabed.
Permanent anchors These are used where the vessel is permanently or semi-permanently sited for example in the case of lightvessels or channel marker buoys The anchor needs to hold the vessel in all weathers including the most severe storm but needs to be lifted only occasionally at most – for example only if the vessel is to be towed into port for maintenance An alternative to using an anchor under these circumstances especially if the anchor need never be lifted at all may be to use a pile that is driven into the seabed