Question 165Motor Plants - 1st Asst/Chief

The correct answer is C) feeler gage. A feeler gage is the correct tool to use for detecting misalignment of the drive shaft and propeller shaft flanges. This is because a feeler gage can precisely measure the gap between the two flanges, which indicates if they are properly aligned or not. The other options, such as an inside micrometer, sighting device, or adjustable trammel, are not the appropriate tools for this specific task. Using a feeler gage to check the alignment of the shaft flanges is a common practice in the maintenance and repair of marine propulsion systems, as specified in the US Coast Guard Captain's License Examination requirements.