63 STAT.] 81ST CONG., 1ST SESS.-CH. 393-AUG. 4, 1949 date shall take rank according to their proficiency as shown by the order of their merit at date of graduation. § 186. Civilian instructors The Secretary may appoint in the Coast Guard, subject to the competitive provisions of the civil-service laws and regulations, such number of civilian instructors as the needs of the Service require, not to exceed eight, whose compensation shall be fixed in accordance with the Classification Act of 1923, as amended. Leaves of absence and hours of work for such civilian instructors shall be governed by regu- lations issued by the Secretary of the Treasury, without regard to sections 29a, 30b-30m, 84,663,667, 672a-673, and Chapter 18, of Title 5. § 187. Permanent commissioned teaching staff; composition The permanent commissioned teaching staff at the Academy shall consist of not more than three professors who may serve as heads of departments, and not more than twelve associate professors, assistant professors, and commissioned instructors, one of whom shall be the librarian. They shall perform duties as prescribed by the Comman- dant, and exercise command only in the academic department of the Academy. § 188. Appointment of permanent commissioned teaching staff The President may appoint in the Coast Guard, by and with the advice and consent of the Senate, the professors, associate professors, assistant professors, and commissioned instructors who are to serve on the permanent commissioned teaching staff of the Academy. An original appointment to the permanent commissioned teaching staff, unless the appointee has served as a civilian instructor, regular com- missioned officer, temporary commissioned officer, or reserve com- missioned officer in the Coast Guard, shall be a temporary appointment until the appointee has satisfactorily completed a probationary term of four years of service; thereafter he may be regularly appointed and his rank shall date from the date of his temporary appointment in the rank in which permanently appointed. § 189. Grade of permanent commissioned teaching staff Professors shall be commissioned officers with grade not above cap- tain, associate and assistant professors with grade not above com- mander, and commissioned instructors with grade not above lieutenant commander. All officers of the permanent commissioned teaching staff shall receive the pay and allowances of other commissioned officers of the same grade and length of service. When any such pro- fessor, associate professor or assistant professor is appointed or commissioned with grade less than the highest grade permitted, he shall be promoted under regulations prescribed by the Secretary. § 190. Retirement of permanent commissioned teaching staff Professors, associate professors, assistant professors, and commis- sioned instructors in the Coast Guard shall be subject to retirement from active service for any cause on the same basis as other permanent commissioned officers of the Coast Guard, and service as a civilian instructor or civilian librarian at the Academy in addition to creditable service authorized by any other law in any of the military services rendered prior to an appointment as a professor, associate professor, assistant professor, or commissioned instructor shall be credited in computing length of service for retirement purposes. The provisions of law relating to retirement for disability in line of duty shall not 509 42 Stat. 1488. 6U. S.C. §§661-674; Supp. II, § 662 d seq. Post, p. 972. 6U.S.C.5901e seq.; Supp. II, §§ 30b, 30e, 663 notes, 902 et seg. Post, p. 972.
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