For the purpose of Sec. 172.170--
(a) Design calculations must include both side and bottom damage, applied separately; and
(b) Damage must consist of the penetrations having the dimensions given in Table 172.180 except that, if the most disabling penetrations would be less than the penetrations given in Table 172.180, the smaller penetration must be assumed.
Table 172.180--Extent of Damage
Collision Penetration
Longitudinal extent.................... 0.495L\2/3\ or 47.6 feet ((\1/
3\)L\2/3\ or 14.5m) whichever
is shorter.Transverse extent \1\.................. B/5 or 37.74 feet (11.5m) \2\
whichever is shorter.Vertical extent........................ From the baseline upward
without limit.
Grounding Penetration at the Forward End But Excluding Any Damage Aft of
a Point 0.3L Aft of the Forward Perpendicular
Longitudinal extent.................... 0.495L\2/3\ or 47.6 feet ((\1/
3\)L\2/3\ or 14.5m) whichever
is shorter.Transverse extent...................... B/6 or 32.81 feet (10m)
whichever is shorter.Vertical extent from the molded line of B/15 or 6.6 feet (2m) whichever
the shell at the centerline. is shorter.
Grounding Penetration At Any Other Longitudinal Position
Longitudinal extent.................... L/10 or 16.41 feet (5m)
whichever is shorter.Transverse extent...................... B/6 or 16.41 feet (5m)
whichever is shorter.Vertical extent from the molded line of B/15 or 6.6 feet (2m) whichever
the shell at the centerline. is shorter.
\1\ Damage applied inboard from the vessel's side at right angles to the
centerline at the level of the summer load line assigned under
Subchapter E of this chapter.\2\ B is measured amidships.