§171.073. Treatment of stepped and recessed bulkheads in Type II subdivision.
46 C.F.R. § 171.073
A main transverse watertight bulkhead may not be stepped unless additional watertight bulkheads are located as shown in Figure 171.067(a) so that the distances A, B, C, and D illustrated in Figure 171.067(a) comply with the following:
A and B must not exceed the maximum bulkhead spacing that permits compliance with § 171.070; and
C and D must not be less than the minimum spacing specified in § 171.070(e).
A main transverse watertight bulkhead may not be recessed unless all parts of the recess are inboard from the shell of the vessel as illustrated in Figure 171.067(c).
If a main transverse watertight bulkhead is recessed or stepped, an equivalent plane bulkhead must be used in the calculations required by § 171.070.
Notes, amendments, and revision history
Authority
Authority: 46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1.
Source
Source: CGD 79-023, 48 FR 51017, Nov. 4, 1983, unless otherwise noted.