US Code - Chapter 571: Voluntary retirement

Section 6321 Officers: 40 years
Section 6322 Officers: 30 years
Section 6323 Officers: 20 years
Section 6324 Officers: creditable service
Section 6325 Officers: retired grade and pay
Section 6326 Enlisted members: 30 years
Section 6327 Officers and enlisted members of the Navy Reserve and Marine Corps Reserve: 30 years; 20 years; retired pay
Section 6328 Computation of years of service: voluntary retirement
Section 6329 Officers not to be retired for misconduct
Section 6330 Enlisted members: transfer to Fleet Reserve and Fleet Marine Corps Reserve; retainer pay
Section 6331 Members of the Fleet Reserve and Fleet Marine Corps Reserve: transfer to the retired list; retired pay
Section 6332 Conclusiveness of transfers
Section 6333 Computation of retired and retainer pay
Section 6334 Higher grade after 30 years of service: warrant officers and enlisted members
Section 6335 Restoration to former grade: warrant officers and enlisted members
Section 6336 Highest grade held satisfactorily: Reserve enlisted members reduced in grade not as a result of the member's misconduct

Discharge of enlisted members

Personnel

Involuntary retirement, separation, and furlough