[Code of Federal Regulations] [Title 41, Volume 4] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 41CFR301-10.183] [Page 32] TITLE 41--PUBLIC CONTRACTS AND PROPERTY MANAGEMENT CHAPTER 301--TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES PART 301-10--TRANSPORTATION EXPENSES--Table of Contents Subpart B--Common Carrier Transportation Sec. 301-10.183 What class of ship accommodations must I use? You must use the lowest first class accommodations when traveling by ship, except when your agency specifically authorizes/approves your use of first-class ship accommodations under paragraphs (a) through (c) of this section. (a) Lowest first class accommodations are not available on the ship. (b) When use of first-class is necessary to accommodate a disability or other special need. Disability must be substantiated in writing by competent medical authority. Special need must be substantiated in writing according to your agency's procedures. If you are authorized under Sec. 301-13.3(a) of this chapter to have an attendant accompany you, your agency also may authorize the attendant to use first-class accommodations if you require the attendant's services en route. (c) When exceptional security circumstances require first-class travel. Exceptional security circumstances include, but are not limited to: (1) The use of lowest first class accommodations would endanger your life or Government property; or (2) You are an agent on protective detail and you are accompanying an individual authorized to use first-class accommodations; or (3) You are a courier or control officer accompanying controlled pouches or packages. Local Transit System