[Code of Federal Regulations]
[Title 46, Volume 7]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR173.085]

[Page 167]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 173_SPECIAL RULES PERTAINING TO VESSEL USE--Table of Contents
 
                    Subpart D_Oceanographic Research
 
Sec. 173.085  General subdivision requirements.

    Each oceanographic vessel must comply with the following:
    (a) Section 171.085(c)(1), (d) and (g) of this subchapter.
    (b) Section 171.105 (a) through (g) of this subchapter except that a 
reduction or elimination of the required inner bottom is allowed if--
    (1) The inner bottom would interfere with the mission of the vessel; 
and
    (2) As a result of other design features, the ability of the vessel 
to withstand side and bottom damage is not reduced.
    (c) Section 171.106 of this subchapter.
    (d) Section 171.108 of this subchapter.
    (e) Section 171.109 of this subchapter.
    (f) Section 171.111 of this subchapter.
    (g) Section 171.113 of this subchapter.
    (h) The collision bulkhead must not be penetrated by more than one 
pipe that carries liquid to or from the forepeak tank. This pipe must 
have a screwdown valve that is--
    (1) Operative from above the bulkhead deck; and
    (2) Attached to the bulkhead inside the forepeak tank.
    (i) Section 171.116 (b), (c), and (e) of this subchapter.
    (j) Section 171.117(c) of this subchapter.
    (k) Each port light in a space located below the freeboard deck, as 
defined in Sec. 42.13-15(i) of this chapter, or in a space within an 
enclosed superstructure must be fitted with a hinged inside dead cover.
    (l) Section 171.118 (b) and (c) of this subchapter.
    (m) Section 171.122 (a) through (d) and (f) of this subchapter.
    (n) Section 171.135 of this subchapter.
    (o) A ventilation duct or forced draft duct may not penetrate a main 
transverse watertight bulkhead unless--
    (1) The penetration is watertight;
    (2) The penetration is located as near the vessel's centerline as 
possible; and
    (3) The bottom of the duct is not more than--
    (i) 18 inches (45.7 cm) below the bulkhead deck; and
    (ii) 4 feet (121.9 cm) above the final waterline after damage 
determined in Sec. 173.080.