Although a specific length of time and experience is not required for most trade and labor occupations, you must show through experience and training that you possess the quality level of knowledge and skill necessary to perform the duties of the position at the level for which you are applying. Qualification requirements emphasis is on quality of experience, not necessarily the length of time. Your qualifications will be evaluated on the basis of your level of knowledge, skills, abilities and/or competencies in the job elements and screen out listed below. This job has a screen-out element which will be used to determine minimum eligibility for this job. Applicants who do not receive a minimum of two points on the screen-out element(s) will be found ineligible. The Screen-out Element for this position is: ABILITY TO DO THE WORK OF THE POSITION WITHOUT MORE THAN NORMAL SUPERVISION Experience performing surface and underwater rigging, structural repairs, and mechanical maintenance on vessels or marine structures. Experience planning, laying out, assembling, repairing, and installing complex weight-handling gear and rigging systems. Experience conducting preventative and corrective maintenance on diving support systems and lifelines (such as air compressors, diving helmets, SCUBA gear, and gas/diesel engines). Experience handling underwater explosives or explosive countermeasures in support of submarine or marine defense operations. Experience utilizing hydraulic, pneumatic, and hand-operated tools in underwater environments to perform cutting, grinding, drilling, or structural inspections. Applicants must meet the requirements of the Office of Personnel Management (OPM) Job Qualification Handbook for Trades and Labor Occupations. Additional qualification information can be found at: https://www.opm.gov/policy-data-oversight/classification-qualifications/federal-wage-system-qualifications/#url=List-of-Approved-Job-Elements Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., professional, philanthropic, religious, spiritual, community, student, social). Volunteer work helps build critical competencies, knowledge, and skills and can provide valuable training and experience that translates directly to paid employment.