PUBLIC LAWS-CH. 512-AUG. 7, 1947 Captains designated for engineering duty, etc. Post, p. 808. Promotion zones. Officers not restrict- ed in duty. Officers below grade of captain designated for engineering duty, etc. Officers designated for limited duty. Normal terms d service. exclusive of those who have once failed of selection for such continua- tion, who shall have completed prior to the end of the preceding fiscal year four years of service in that grade and thirty-four years of total commissioned service, which it is estimated will remain on the active list at the end of the current fiscal year: Provided,That the number to be so furnished shall not be less than 50 per centum of the number of such rear admirals, exclusive of those who have once failed of selection for such continuation, eligible for consideration by the board for con- tinuation on the active list. (i) The number to be furnished the board in respect to captains designated for engineering duty, aeronautical engineering duty, or special duty to be continued on the active list shall be such a number in each case not to exceed in each instance the number prescribed in subsection 112 (a) of this title, as the Secretary of the Navy shall determine to be necessary to meet the requirements of the Navy. (j) The promotion zone in any grade for officers not restricted in the performance of duty shall be established by the Secretary of the Navy as of the date of the convening of a selection board to consider officers of that grade for recommendation for promotion to the next higher grade. It shall consist of that number of the most senior such officers of the grade under consideration, who are eligible for selection for promotion to the next higher grade and have not previously failed of such selection, which must be either selected for promotion by the particular board or be considered as having failed of such selection, in order to maintain a flow of promotion consistent with the terms of service set out in subsection (m) of this section and to best assure to individuals in succeeding years equality of opportunity for promotion. The number shall be determined by the Secretary of the Navy and shall be based upon a consideration of the estimated number of vacancies which will occur in the next higher grade for each of the ensuing five years, the number of such officers who will be eligible for selection, and the terms of service which they will have completed. (k) The promotion zones in any grade, below that of captain, for officers designated for engineering duty, for officers designated for aeronautical engineering duty, and for officers designated for special duty, shall each be composed of all officers of each such designation in the grade who have not previously failed of selection to the next higher grade and who are senior to the junior officer in the promotion zone determined as provided in subsection (j) of this section. (1) The promotion zone in any grade for officers designated for limited duty shall be established by the Secretary of the Navy as of the date of the convening of a selection board to consider officers of that grade for recommendation for promotion to the next higher grade. It shall consist of that number of the most senior such officers of the grade under consideration, who are eligible for selection for promotion to the next higher grade and have not previously failed of such selection, which must be either selected for promotion by the par- ticular board or be considered as having failed of such selection, in order to maintain a flow of promotion consistent with the terms of service set out in subsection (n) of this section and to best assure to individuals in succeeding years equality of opportunity for promotion. The number shall be determined by the Secretary of the Navy and shall be based upon a consideration of the estimated number of vacan- cies which will occur in the next higher grade for each of the ensuing five years, the number of such officers who will be eligible for selection, and the terms of service which they will have completed. (m) The normal terms of service of officers, other than officers designated for limited duty, in the various grades below rear admiral shall be: [61 STAT.
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