Provisions similar to this section are contained in section 3032 of this title.

1955—Act June 21, 1955, credited all service as deck officer and junior engineer.

1949—Act Oct. 12, 1949, repealed that part of second proviso of subsec. (b) relating to service credit as deck officer or junior engineer for pay, longevity pay, or retirement purposes.

1948—Act June 3, 1948, repealed subsecs. (a), (c), (d) and all of subsec. (b) except for second proviso which now comprises this section.

Act Oct. 12, 1949, ch. 681, title V, § 533(a), 63 Stat. 841, provided that: “Except as provided in subsections (b) and (c) of this section, this Act [see Tables for classification] shall become effective on October 1, 1949, and no pay, allowances, or benefits provided herein shall accrue to any person for any period prior thereto.”