[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: 46CFR178.340]

[Page 239-240]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 178_INTACT STABILITY AND SEAWORTHINESS--Table of Contents
 
                  Subpart C_Intact Stability Standards
 
Sec. 178.340  Stability standards for pontoon vessels on protected waters.

    (a) The portion of the deck accessible to passengers on a pontoon 
vessel must not extend beyond the outboard edge of either pontoon, nor 
beyond the forward or aft ends of the pontoons.
    (b) A pontoon vessel that has more than 2 pontoons or has decks 
higher than 150 milimeters (6 inches) above the pontoons must meet a 
stability standard acceptable to the Commanding Officer, Marine Safety 
Center.
    (c) A pontoon vessel must be in the condition described in Sec. 
178.330(a) of this part when the simplified stability proof test is 
performed, except that the simulated load of passengers, crew, and other 
weights is initially centered on the vessel so that trim and heel are 
minimized.
    (d) A pontoon vessel has the minimum acceptable level of initial 
stability if it meets the following:
    (1) With the simulated load located at the extreme outboard position 
of the deck on the side with the least initial freeboard, the remaining 
exposed cross sectional area of the pontoon on that side must be equal 
to or greater than the cross sectional area submerged due to the load 
shift, as indicated in Figure 178.340(d)(1); and
[GRAPHIC] [TIFF OMITTED] TC01MR91.035


[[Page 240]]


    (2) With the simulated load located on the centerline at the extreme 
fore or aft end of the deck, whichever position is further from the 
initial position of the load, the top of the pontoon must not be 
submerged at any location, as indicated in Figure 178.340(d)(2).
[GRAPHIC] [TIFF OMITTED] TC01MR91.036


[CGD 85-080, 61 FR 966, Jan. 10, 1996, as amended by CGD 97-057, 62 FR 
51050, Sept. 30, 1997]