Section 11.512 - Service requirements for national endorsement as first assistant engineer of steam, motor, and/or gas turbine-propelled vessels(a) The minimum service required to qualify an applicant for endorsement as first assistant engineer of steam, motor, and/or gas turbine-propelled vessels is- (1) One year of service as an assistant engineer while holding a license or MMC with a second assistant engineer endorsement; or(2) One year of service as a chief engineer (limited) and completing the appropriate examination described in subpart I of this part.(b) A person holding this endorsement may qualify for an STCW endorsement, according to §§ 11.327 , 11.331 , and 11.333 of this part.