[Code of Federal Regulations]
[Title 46, Volume 2]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR45.131]

[Page 84]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 45_GREAT LAKES LOAD LINES--Table of Contents
 
                   Subpart D_Conditions of Assignment
 
Sec. 45.131  Ventilators.

    (a) Ventilators passing through superstructures other than enclosed 
superstructures must have coamings of steel or equivalent material at 
the freeboard deck.
    (b) Ventilators in position 1 must have coamings at least 30 in. 
above the deck and ventilators in position 2 must have coamings at least 
24 in. above the deck. The Commandant or the assigning authority may 
also require coamings in other exposed positions.
    (c) Ventilators in position 1 or 2 to spaces below freeboard decks 
or decks of enclosed superstructures or trunks must have coamings of 
steel permanently connected to the deck and any ventilator coaming that 
is more than 36 in. high must be specially supported.
    (d) Except as provided in paragraph (e) of this section ventilator 
openings must have weathertight closing appliances that are permanently 
attached or, where approved by the Commandant or the assigning authority 
conveniently stowed near the ventilators to which they are to be fitted.
    (e) Ventilators in position 1, the coamings of which extend to more 
than 12.5 ft above the deck, and in position 2, the coamings of which 
extend to more than 6 ft above the deck, need not have closing 
appliances unless specifically required by the Commandant.