In a method for repairing a damaged wooden structure 21, in particular a partially submerged mooring post 23, a floating structure 1 is placed in the water and then a work platform 3 is hung on the floating structure 1. Thereafter a professional stands on the work platform 3 to remove the affected wood. Then a formwork is placed around the part of the pile where the affected part 25 has been removed. This formwork is equipped with a casting nozzle at the top. After filling the space in the formwork with epoxy resin through the casting nozzle, the formwork is removed and the repaired part can be finished.