| Age ≤ 5 years
|
5<age≤10 years
|
10<age≤15 years
|
Age>15 years
|
| 1
|
2
|
3
|
4
|
| One web frame (1), in
a complete ballast tank (see Note 1)
|
All web frames (1),
in a complete ballast tank (see Note 1) The knuckle area and the
upper part (5 m approximately) of one web frame in each remaining ballast tank
(6)
|
All web frames (1),
in all ballast tanks
|
As for ships referred to in column
3
|
| Additional transverse areas
as deemed necessary by the Administration
|
| One deck transverse, in a
cargo oil tank (2)
|
One deck transverse, in two
cargo oil tanks (2)
|
All web frames (7), including deck
transverse and cross ties, if fitted, in a cargo oil tank
|
| One web frame (7), including deck
transverse and cross ties, if fitted, in each remaining cargo oil tank
|
| One transverse bulkhead (4), in a
complete ballast tank (see Note 1)
|
One transverse bulkhead (4), in
each complete ballast tank (see Note 1)
|
All transverse bulkheads,
in all cargo oil (3) and ballast (4) tanks
|
| One transverse bulkhead (5) in a
cargo oil centre tank
|
One transverse bulkhead (5), in
two cargo oil centre tanks
|
| One transverse bulkhead (5), in a
cargo oil wing tank (see Note 2)
|
One transverse bulkhead (5), in a
cargo oil wing tank (see Note 2)
|
| NOTES:
(1), (2), (3), (4), (5), (6) and
(7) are areas to be subjected to close-up surveys and thickness
measurements (see appendix 3 of annex 10).
(1)Web frame in a ballast tank means vertical web in side tank,
hopper web in hopper tank, floor in double bottom tank and deck transverse
in double deck tank (where fitted), including adjacent structural members.
In fore and aft peak tanks web frame means a complete transverse web frame
ring including adjacent structural members.
(2) Deck
transverse, including adjacent deck structural members (or external
structure on deck in way of the tank, where applicable).
(3)
Transverse bulkhead complete in cargo tanks, including girder system,
adjacent structural members (such as longitudinal bulkheads) and internal
structure of lower and upper stools, where fitted.
(4)
Transverse bulkhead complete in ballast tanks, including girder system and
adjacent structural members, such as longitudinal bulkheads, girders in
double bottom tanks, inner bottom plating, hopper side, connecting
brackets.
(5) Transverse bulkhead lower part in cargo tank,
including girder system, adjacent structural members (such as longitudinal
bulkheads) and internal structure of lower stool, where
fitted.
(6) The knuckle area and the upper part (5 metres
approximately), including adjacent structural members. Knuckle area is the
area of the web frame around the connections of the slope hopper plating to
the inner hull bulkhead and the inner bottom plating, up to 2 metres from
the corners both on the bulkhead and the double bottom.
(7) Web
frame in a cargo oil tank means deck transverse, longitudinal bulkhead
vertical girder and cross ties, where fitted, including adjacent structural
members.
Note 1 Complete ballast tank: means
double bottom tank plus double side tank plus double deck tank, as
applicable, even if these tanks are separate.
Note 2 Where no centre cargo tanks are fitted (as in the case of
centre longitudinal bulkhead), transverse bulkheads in wing tanks should be
surveyed.
|