[Footnote 3-64: Memo, CNO for Cmdt, First and Fifth Naval Districts, 10 May 44, sub: Assignment of Negro Personnel, P-16-3/MM, BuPersRecs.] [Footnote 3-65: For an assessment of the performance of the _Mason's_ crew. see "BuPers Hist," pp. 42-43 and 92.] Opportunity for advancement was as important to morale as (p. 079) assignment according to training and skill, and the Special Programs Unit encouraged the promotion of Negroes according to their ability and in proportion to their number. Although in July 1943 the Bureau of Naval Personnel had warned commanders that it would continue to order white enlisted men to sea with the expectation that they would be replaced in shore jobs by Negroes,[3-66] the Special Programs Unit discovered that rating and promotion of Negroes was still slow. At the unit's urging, the bureau advised all naval districts that it expected Negroes to be rated upward "as rapidly as practicable" and asked them to report on their rating of Negroes.[3-67] It also authorized stations to retain white petty officers for up to two weeks to break in their black replacements, but warned that this privilege must not be abused. The bureau further directed that all qualified general service candidates be advanced to ratings for which they were eligible regardless of whether their units were authorized enough spaces to take care of them. This last directive did little for black promotions at first because many local commanders ruled that no Negroes could be "qualified" since none were allowed to perform sea duties. In January 1944 the bureau had to clarify the order to make sure that Negroes were given the opportunity to advance.[3-68] [Footnote 3-66: BuPers Ltr, P16-3, 12 Jul 43, sub: The Expanded Use of Negroes, BuPersRecs.] [Footnote 3-67: Ltr, Chief, NavPers, to Cmdts, All Naval Districts, 19 Aug 43, sub: Advancement in Rating re: Negro Personnel, P17-2/MM, BuPersRecs.] [Footnote 3-68: BuPers Cir Ltr 6-44, 12 Jan 44.]