Manual of the Medical Department (NAVMED P-117): Chapter 15: Medical Examinations: Physical Defects and Waivers
Department of the Navy
Bureau of Medicine and Surgery
(2) Waiver Required. When a defect is considered to be disqualifying per the standards, but is of such nature as not to preclude the performance of duty, a waiver may be requested.
(3) Waiver Not Appropriate. A waiver is not considered appropriate when a defect might constitute a menace or jeopardize health, general welfare, or safety or is of such a nature that the individual could not reasonably fulfill the purpose of employment in the naval service.