1 This section applies to ships regardless of
the date of construction: Transverse sectional areas of deck flange
(deck plating and deck longitudinals) and bottom flange (bottom shell
plating and bottom longitudinals) of the ship's hull girder have been
calculated by using the thickness measured, renewed or reinforced,
as appropriate, during the renewal survey of the Cargo Ship Safety
Construction Certificate or the Cargo Ship Safety Certificate (SC
renewal survey) most recently conducted after the ship reached 10
years of age, and found that the diminution of the transverse sectional
area does not exceed 10% of the as-built area, as shown in the following
table:
Table 1 Transverse sectional
area of hull girder flange
|
|
Measured
|
As-built
|
Diminution
|
Transverse section 1
|
Deck
flange
|
cm2
|
cm2
|
cm2 ( %)
|
Bottom flange
|
cm2
|
cm2
|
cm2 ( %)
|
Transverse section 2
|
Deck
flange
|
cm2
|
cm2
|
cm2 ( %)
|
Bottom
flange
|
cm2
|
cm2
|
cm2 ( %)
|
Transverse section 3
|
Deck
flange
|
cm2
|
cm2
|
cm2 ( %)
|
Bottom
flange
|
cm2
|
cm2
|
cm2 ( %)
|
2 This section applies to ships constructed on
or after 1 July 2002: Section moduli of transverse section of the
ship's hull girder have been calculated by using the thickness of
structural members measured, renewed or reinforced, as appropriate,
during the SC renewal survey most recently conducted after the ship
reached 10 years of age in accordance with the provisions of paragraph
2.1.1 of annex 12, and are found to be within their diminution limits
determined by the Administration, taking into account the recommendations
adopted by the Organizationfootnote,
as shown in the following table:
Table 2 Transverse section
modulus of hull girder
|
Zact (cm3)*1
|
Zreq (cm3)*2
|
Remarks
|
Transverse section 1
|
Upper
deck
|
|
|
|
Bottom
|
|
|
|
Transverse section 2
|
Upper
deck
|
|
|
|
Bottom
|
|
|
|
Transverse section 3
|
Upper
deck
|
|
|
|
Bottom
|
|
|
|
Notes :
*1 Zact means the actual section moduli
of the transverse section of the ship's hull girder calculated by
using the thickness of structural members measured, renewed or
reinforced, as appropriate, during the SC renewal survey, in
accordance with the provisions of paragraph 2.1.1 of annex 12.
*2 Zreq means the diminution limit of the
longitudinal bending strength of ships, as calculated in accordance
with the provisions of paragraph 2.1.1 of annex 12.
The
calculation sheets for Zact should be attached to this
report.
|
3 This section applies to ships constructed before
1 July 2002: Section moduli of transverse sections of the ship's hull
girder have been calculated by using the thickness of structural members
measured, renewed or reinforced, as appropriate, during the SC renewal
survey most recently conducted after the ship reached 10 years of
age in accordance with the provisions of paragraph 2.2.1.2 of annex
12, and found to meet the criteria required by the Administration
or the recognized classification society and that Zact is
not less than Zmc (defined in *2 below) as specified in
appendix 2 to annex 12, as shown in the following table.
Describe the criteria for acceptance of the minimum section
moduli of the ship's hull girder for ships in service required by
the Administration or the recognized classification society.
Table 3 Transverse section
modulus of hull girder
|
|
Zact (cm3)*1
|
Zmc (cm3)*2
|
Remarks
|
Transverse section
1
|
Upper
deck
|
|
|
|
Bottom
|
|
|
|
Transverse section
2
|
Upper
deck
|
|
|
|
Bottom
|
|
|
|
Transverse section
3
|
Upper
deck
|
|
|
|
Bottom
|
|
|
|
Notes :
*1 As defined in note *1 of table 2.
*2 Zmc means the
diminution limit of minimum section modulus calculated in accordance
with provisions of paragraph 2.1.2 of annex 12.
|