[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: 46CFR173.063]

[Page 162-166]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 173--SPECIAL RULES PERTAINING TO VESSEL USE--Table of Contents
 
                         Subpart C--School Ships
 
Sec. 173.063  Intact stability requirements.

    (a) Except as provided in this section, each sailing school vessel 
must meet the intact stability requirements in Secs. 170.170, 171.050, 
and 171.055 of this chapter.
    (b) In applying the requirements in Secs. 170.170 and 171.050 of 
this subchapter, the value of ``T'' is equal to the angle of heel at 
which the deck edge is immersed or \1/3\ of the downflooding angle, 
whichever is less.
    (c) In applying the requirements of Sec. 171.055(d) (1) and (2) of 
this subchapter--
    (1) The value ``X'' is equal to 0.6 long tons/square foot (9.8 
metric tons/square meter).

[[Page 163]]

    (2) For a vessel in service on protected or partially protected 
waters, values ``Y'' and ``Z'' are determined from graphs 173.063 (a) 
and (b) and multiplied by the multiplier in graph 173.063(e).
    (3) For a vessel in service on exposed waters, ``Y'' and ``Z'' are 
determined from graphs 173.063 (c) and (d) and multiplied by the 
multiplier from graph 173.063(e).
    (4) To convert required numerals to units of ``metric tons/square 
meter,'' multiply by 10.94.
    (d) Each vessel of the open boat type that is required to comply 
with the requirements in Secs. 178.300 and 178.310 of this chapter, may 
instead comply with the requirements in paragraph (e) of this section.
    (e) In lieu of complying with the requirements of paragraph (b) of 
this section, an open boat may be provided with sufficient air tankage 
or other internal buoyancy to maintain the vessel afloat when the vessel 
is completely flooded or capsized. If foam is used to comply with this 
paragraph, it must be installed in accordance with the requirements in 
Sec. 170.245 of this subchapter.
    (f) A sailing school catamaran must meet the intact stability 
requirements in Sec. 171.057.

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[GRAPHIC] [TIFF OMITTED] TC01MR91.029


[[Page 165]]


[GRAPHIC] [TIFF OMITTED] TC01MR91.030


[[Page 166]]


[GRAPHIC] [TIFF OMITTED] TC01MR91.031


[CGD 83-005, 51 FR 925, Jan. 9, 1986, as amended by CGD 85-080, 61 FR 
946, Jan. 10, 1996]

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