A report on propeller efficiency should include key factors such as thrust, power input, and propeller design characteristics. It's important to discuss the impact of environmental conditions on efficiency and include performance metrics. Relevant references can be found in academic journals, engineering textbooks, and industry standards related to aerodynamics and marine propulsion. Utilizing online databases and scholarly articles will enhance the report's credibility. Thorough research and accurate data are essential for a comprehensive analysis of propeller efficiency.