A boat builder draws up plans and builds marine vessels. Your specific job duties depend on the type of boats that you construct; some design and create personal and leisure crafts, while others assemble ships for commercial use. In this role, your responsibilities include sourcing necessary materials, fabricating parts, and constructing the boat. On larger projects, you may review blueprints and oversee other builders or contractors as they complete the building process to ensure they follow the client's specifications. Some boat builders specialize in fabricating and installing specific elements. In addition to building new boats, many boat builders also repair, restore, or customize existing vessels.