[Code of Federal Regulations]
[Title 46, Volume 7]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR171.145]

[Page 143]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 171--SPECIAL RULES PERTAINING TO VESSELS CARRYING PASSENGERS--Table of Contents
 
                  Subpart H--Drainage of Weather Decks
 
Sec. 171.145  Drainage of a vessel with a cockpit.

    (a) Except as follows, the cockpit must be watertight:
    (1) A cockpit may have companionways if they comply with 
Sec. 171.124(d).
    (2) A cockpit may have ventilation openings along its inner 
periphery if--
    (i) The vessel operates only on protected or partially protected 
waters;
    (ii) The ventilation openings are located as high as possible in the 
side of the cockpit; and
    (iii) The height of the ventilation opening does not exceed 2 inches 
(5 centimeters).
    (b) The cockpit must be designed to be self-bailing.
    (c) Scuppers installed in a cockpit must be located to allow rapid 
clearing of water in all probable conditions of list and trim.
    (d) Scuppers must have a combined area of at least the area given by 
either of the following equations:

A=0.1(D) square inches.
A=6.94(D) square centimeters.

Where--

A = the combined area of the scuppers in square inches (square 
centimeters).
D = the area of the cockpit in square feet (square meters).

    (e) The cockpit deck of a vessel that operates on exposed or 
partially protected waters must be at least 10 inches (24.5 centimeters) 
above the deepest subdivision load line, unless the vessel complies 
with--
    (1) The intact stability requirements of Sec. 171.150;
    (2) The Type II subdivision requirements in Secs. 171.070, 171.072, 
and 171.073; and
    (3) The damage stability requirements in Sec. 171.080.
    (f) The cockpit deck of all vessels that do not operate on exposed 
or partially protected waters must be located as high above the deepest 
subdivision load line as practicable.

[CGD 85-080, 62 FR 51354, Sept. 30, 1997]