
From the U.S. Code Online via GPO Access
[wais.access.gpo.gov]
[Laws in effect as of January 2, 2001]
[Document not affected by Public Laws enacted between
  January 2, 2001 and January 28, 2002]
[CITE: 33USC2025]

 
                TITLE 33--NAVIGATION AND NAVIGABLE WATERS
 
                  CHAPTER 34--INLAND NAVIGATIONAL RULES
 
                           SUBCHAPTER I--RULES
 
                        Part C--Lights and Shapes
 
Sec. 2025. Sailing vessels underway and vessels under oars (Rule 
        25)
        

(a) Sailing vessels underway

    A sailing vessel underway shall exhibit:
        (i) sidelights; and
        (ii) a sternlight.

(b) Sailing vessels of less than 20 meters in length

    In a sailing vessel of less than 20 meters in length the lights 
prescribed in paragraph (a) of this Rule may be combined in one lantern 
carried at or near the top of the mast where it can best be seen.

(c) Additional lights

    A sailing vessel underway may, in addition to the lights prescribed 
in paragraph (a) of this Rule, exhibit at or near the top of the mast, 
where they can best be seen, two all-round lights in a vertical line, 
the upper being red and the lower green, but these lights shall not be 
exhibited in conjunction with the combined lantern permitted by 
paragraph (b) of this Rule.

(d) Sailing vessels of less than 7 meters in length; vessels under oars

    (i) A sailing vessel of less than 7 meters in length shall, if 
practicable, exhibit the lights prescribed in paragraph (a) or (b) of 
this Rule, but if she does not, she shall have ready at hand an electric 
torch or lighted lantern showing a white light which shall be exhibited 
in sufficient time to prevent collision.
    (ii) A vessel under oars may exhibit the lights prescribed in this 
Rule for sailing vessels, but if she does not, she shall have ready at 
hand an electric torch or lighted lantern showing a white light which 
shall be exhibited in sufficient time to prevent collision.

(e) Vessels proceeding under sail

    A vessel proceeding under sail when also being propelled by 
machinery shall exhibit forward where it can best be seen a conical 
shape, apex downward. A vessel of less than 12 meters in length is not 
required to exhibit this shape, but may do so.

(Pub. L. 96-591, Sec. 2, Dec. 24, 1980, 94 Stat. 3426.)

                          Codification

    Section was enacted as part of section 2 of Pub. L. 96-591 which 
enacted the Inland Navigational Rules which comprise this subchapter.

                  Section Referred to in Other Sections

    This section is referred to in sections 2020, 2031 of this title.
