Cranes, tensioners, windlasses, capstans, winches etc. are only in use during operations, mooring, anchoring and similar situations. If such equipment has rolling element bearings, there is a risk that those bearings can get damages at standstill because of vessel vibrations. Maintenance typically comprises only lubrication, oil changes and certain minor inspections. SPM inspection of these machines can determine if the bearings have been damaged by vibrations.