[Code of Federal Regulations] [Title 46, Volume 4] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR98.30-33] [Page 95] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF TRANSPORTATION (CONTINUED) PART 98--SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR CERTAIN DANGEROUS CARGOES IN BULK--Table of Contents Subpart 98.30--Portable Tanks Sec. 98.30-33 Warning signals. (a) If the vessel is moored, no person may transfer to or from a portable tank a product with a flashpoint of less than 300 deg. F unless the person in charge displays a-- (1) Red flag by day; and (2) Red electric lantern by night. (b) If the vessel is at anchor, no person may transfer to or from a portable tank a product with a flashpoint of less than 300 deg. F unless the person in charge displays a red flag. (c) The signal required in paragraphs (a) and (b) of this section must be visible on all sides of the vessel.