The Model ship is a item found during Ghosts Ahoy. It is given by the Old crone, who says it belongs to her son, the Old man. Silk should be used on the model ship to be used as a flag. This creates the model ship (silk). The flag should then be dyed with the colours on the flag of the Ghost Ship found north-west of Port Phasmatys. Once it has been dyed the correct colours, it should be given to the Old man in exchange for a chest key to continue the quest.