[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: 46CFR69.61]

[Page 393-394]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 69_MEASUREMENT OF VESSELS--Table of Contents
 
                 Subpart B_Convention Measurement System
 
Sec. 69.61  Excluded spaces.

    (a) Excluded space means an enclosed space which is excluded from 
volume (V) in calculating gross tonnage. Except as under paragraph (g) 
of this section, this section lists the excluded spaces.
    (b) A space that is within a structure and that is opposite an end 
opening extending from deck to deck (except for a curtain plate of a 
height not exceeding by more than one inch the depth of the adjoining 
deck beams) and having a breadth equal to or greater than 90 percent of 
the breadth of the deck at the line of the opening is an excluded space, 
subject to the following:
    (1) Only the space between the actual end opening and a line drawn 
parallel to the line or face of the opening at a distance from the 
opening equal to one-half of the breadth of the deck at the line of the 
opening is excluded. (See Sec. 69.75, figure 1.)
    (2) If, because of any arrangement (except convergence of the 
outside plating as shown in Sec. 69.75, figure 3), the breadth of the 
space is less than 90 percent of the breadth of the deck, only the space 
between the line of the opening and a parallel line drawn through the 
point where the athwartship breadth of the space is equal to 90 percent 
or less of the breadth of the deck is excluded. (See Sec. 69.75, 
figures 2 and 4.)
    (3) When any two spaces, either of which is excluded under 
paragraphs (b)(1) or (b)(2) of this section, are separated by an area 
that is completely open except for bulwarks or open rails, these two 
spaces must not be excluded if the separation between the two spaces is 
less than the least half breadth of the deck in way of the separation. 
(See Sec. 69.75, figures 5 and 6.)
    (4) When the deck at the line of an opening has rounded gunwales, 
the breadth of the deck is the distance between the tangent points 
indicated in Sec. 69.75, figure 11.
    (c) A space that is open to the weather and that is under an 
overhead deck covering with no connection on the space's exposed sides 
between the covering and the deck other than the stanchions necessary 
for the covering's support is an excluded space. An open rail or bulwark 
fitted at the vessel's side does not disqualify the space from being an 
excluded space if the height between the top of the rail or bulwark and 
the overhead structure or curtain plate (if fitted) is not less than 2.5 
feet or one-third of the height of the space, whichever is greater. (See 
Sec. 69.75, figure 7.)
    (d) A space in a side-to-side structure directly in way of opposite 
side openings not less than 2.5 feet in height or one-third of the 
height of the structure, whichever is greater, is an excluded space. If 
the opening is only on one side of the structure, the space to be 
excluded is limited inboard from the opening to a maximum of one-half of 
the breadth of the deck in way of the opening. (See Sec. 69.75, figure 
8.)
    (e) A space in a structure immediately below an uncovered opening in 
the deck overhead is an excluded space, if the opening is exposed to the 
weather and the space to be excluded is limited to the area of the 
opening. (See Sec. 69.75, figure 9.)
    (f) A recess in the boundary bulkhead of a structure which is 
exposed to the weather and which has an opening that extends from deck 
to deck without a means of closing is an excluded space, if the interior 
width of the space is not greater than the width of the opening and 
extension of the space into the structure is not greater than twice the 
width of the opening. (See Sec. 69.75, figure 10.)

[[Page 394]]

    (g) Any space described in paragraphs (b) through (f) of this 
section which fulfills at least one of the following conditions is not 
an excluded space:
    (1) The space is fitted with shelves or other means designed for 
securing cargo or stores.
    (2) The opening that would otherwise permit the space to be excluded 
space is fitted with a means of closure.
    (3) Other features of the space make it possible for the space to be 
closed.