[Code of Federal Regulations] [Title 46, Volume 1] [Revised as of October 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR10.404] [Page 148] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 10_LICENSING OF MARITIME PERSONNEL--Table of Contents Subpart D_Professional Requirements for Deck Officers' Licenses Sec. 10.404 Service requirements for master of ocean or near coastal steam or motor vessels of any gross tons. The minimum service required to qualify an applicant for license as master of ocean or near coastal steam or motor vessels of any gross tons is: (a) One year of service as chief mate on ocean steam or motor vessels; or, (b) One year of service on ocean steam or motor vessels while holding a license as chief mate of ocean steam or motor vessels as follows: (1) A minimum of six months of service as chief mate; and, (2) Service as officer in charge of a navigational watch accepted on a two-for-one basis (12 months as second or third mate equals six months of creditable service).