A barge need not comply with Sec. 174.015 and subparts C and E of part 170 of this chapter if it has the following characteristics:
(a) The weather deck is watertight.
(b) The barge's hull proportions fall within any one of the ratios in categories (A) through (D) in Table 174.020.
(c) The maximum cargo height is 30 feet (9.25 meters) or a value equal to the depth of the barge amidships, whichever is less.
Table 174.020------------------------------------------------------------------------
Category Beam/depth ratio Draft/depth ratio------------------------------------------------------------------------A.............................. 3.00 to 3.74....... Equal to or less
than 0.70.B.............................. 3.75 to 3.99....... Equal to or less
than 0.72.C.............................. 4.00 to 4.49....... Equal to or less
than 0.76.D.............................. 4,50 to 6.00....... Equal to or less
than 0.80.------------------------------------------------------------------------