(a) To make the desired model he has patience and some aptitude for this sort of work. It is possible for any reasonably handy person to produce a good model, provided he is prepared to give time and follows the instructions carefully.
(b) Elementary solid models for which the parts are provided in the kit and they are only to assemble them, with the help of sequential drawing supplied with the kit.
(c) In the second stage cadets are required to build powered models and sailing yachts out of kits which contains pre-cut parts, marine fittings and construction plan. These steps are followed to enable the ship modeller to finally construct advanced models from full scale plans using only readily available materials.