Engineering Construction Supervisor Construction Supervisors manage building projects, making sure they are completed safely, on time and within budget. They must demonstrate proactive approaches to problem solving, have good leadership skills, and be a competent pipe/structural fitter or welder. Their duties include controlling the day to day workload of the site crew and distributing work within the team. Fabrication Supervisor Fabrication Supervisors are responsible for monitoring and managing fabrication work efficiently and safely. Loftsmen Loftsmen prepare and create structural designs for ships. They must have fundamental knowledge of ship construction techniques, including modular construction, sub-assembly erection and pre-outfitting.