[Code of Federal Regulations]
[Title 46, Volume 1]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR32.20-20]

[Page 428]
 
                           TITLE 46--SHIPPING
 
         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
 
PART 32_SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS--Table 
 
                  Subpart 32.20_Equipment Installations
 
Sec. 32.20-20  Liquid level gaging--T/ALL.

    On tankships, the construction or conversion of which is started on 
or after July 1, 1951, a method for determining the level of the liquid 
in a cargo tank without opening ullage holes, cargo hatches, or 
Butterworth plates, shall be provided on all tankships certificated for 
the carriage of Grade A liquids: Provided, That ullage holes fitted with 
sounding pipes tightly secured to the underside of the tank tops, open 
at the bottom, and extending to within 18 inches or less of the bottom 
of the tank shall be considered as complying with the foregoing 
requirement.