Castaway's Construction is a job that involves the construction of rafts. It requires knowledge of woodworking and the ability to use tools such as saws, hammers, and nails. The rafts are typically made from logs, bamboo, or other materials that can be found on the island. The rafts must be strong enough to withstand the ocean currents and waves. The job also requires the ability to repair and maintain the rafts, as well as the ability to navigate them in the open sea.