CLASS ABS BULK CARRIER Page 1 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.1 (Age≤5 Years)

1 Suspect areas throughout the vessel.

2 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

Close-up Survey

1 25% of shell frames in the forward cargo hold at representative positions. Representative
frames in remaining cargo holds.
2 One(1) transverse web with associated plating and longitudinals in two(2) representative
ballast tanks of each type:topside,hopper side or side tanks.
3 Two(2) cargo hold transverse bulkheads

4 All cargo hold hatch covers and coamings

LIEF MARINE
CLASS ABS BULK CARRIER Page 2 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.2 (5≤Age≤10 Years)

1 Two(2) transverse sections of deck outside the line of cargo hatch openings within the
amidships 0.5L.
2 Plates in two (2) wind-and-water strakes in way of the same transverse sections.

3 All cargo hold hatch covers and coamings(plating and stiffeners)

4 All deck plating inside th line of opening between cargo hold hatches.

5 Suspect areas throught the vessel.

6 Measurement,for general assessment and recording of corrosion patterns,of structural

members subject to Close-up Survey.

7 Measurements of the corrugated transverse watertight bulkhead between cargo holds

No's.one and two,for vessels subject to IACS UR S19 and IACS UR S23.

8 Additional thickness measurements to be taken of the cargo hold side shell frames and
brackets on ships subject to compliance with IACS UR S31 for initial and continued
compliance.

Close-up Survey

1 All shell frames in the forward cargo hold and 25% of frames in each of the remaining
cargo holds including upper and lower end attachments and adjacent shell plating.
2 One(1) transverse web with associated plating and longitudinals in all ballast tanks

3 Forward and aft transverse bulkheads in one(1) topside ballast tank, including stiffenering
systems.
4 All cargo hold transverse bulkheads, including stiffenering systems.

5 All deck plating and under deck structure inside line of hatch openings between all
cargo hold hatches.
6 All cargo hatch covers and coamings.

LIEF MARINE
CLASS ABS BULK CARRIER Page 3 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.3 (10≤Age≤15 Years)

1 All main deck plating within the cargo area.

2 Two(2) transverse sections,one(1) in the amidship area,outside the line of cargo hatch
openings within the amidships 0.5L.

3 All plating in two(2) wind-and-water strakes,port and starboard,full length.

4 All cargo hold hatch covers and coamings(plating and stiffeners)

5 Plating and stiffeners of transverse bulkhead

6 Internals in forepeak and afterpeak tanks.

7 Suspect areas throughtout the vessel

8 Measurement,for general assessment and recording of corrosion patterns,of structural

members subject to Close-up Survey.

9 Measurements of the corrugated transverse watertight bulkhead between cargo holds

No's.one and two,for vessels subject to IACS UR S19 and IACS UR S23.

10 Additional thickness measurements to be taken of the cargo hold side shell frames and
brackets on ships subject to compliance with IACS UR S 31 for initial and continued
compliance

Close-up Survey

1 All shell frames in the forward cargo hold and one other selected cargo hold, and 50%
of frames in each of the remaining cargo holds including upper and lower end
attachments and adjacent shell plating.
2 All transverse web with associated plating and longitudinals in all ballast tanks

3 All transverse bulkheads in ballast tanks, including stiffenering systems.

4 All cargo hold transverse bulkheads, including internal structure of upper and lower stools,
where fitted.
5 All deck plating and under deck structure inside the line of hatch openings between all
cargo hold hatches.
6 All cargo hatch covers and coamings.

LIEF MARINE
CLASS ABS BULK CARRIER Page 4 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.4 (Age>15 Years)

1 All main deck plating within the cargo area,all exposed main deck plating outside of the
cargo area, and all exposed first tier superstructure deck plates(poop,bridge and forecastle
decks).

2 A minimum of three(3) transverse sections,one(1) in the amidship area,outside of the line

of cargo hatch openings within the amidships 0.5L

3 All plating in two(2) wind-and-water strakes,port and starboard,full length.

4 All cargo hold hatch covers and coamings(plating and stiffeners)

5 Plating and stiffeners of transverse bulkhead

6 Internals in forepeak and afterpeak tanks.

7 Duck keel or pipe tunnel plating and internals.

8 All keel and bottom plates full length.

9 Measurement,for general assessment and recording of corrosion patterns,of structural

members subject to Close-up Survey.

10 Suspect areas throught the vessel.

11 Measurement of the corrugated transverse watertight bulkhead between cargo holds No's.
one and two, for vessels subject to IACS UR S19 and IACS UR S23

12 Plating of seachests. Shell plating in way of overboard discharges as considered necessary

by the attending Surveyor.

13 Additional thickness measurements to be taken of the cargo hold side shell frames and
brackets on ships subject to compliance with IAVS UR S31 for initial and continued
compliance

Close-up Survey

1 All shell frames in all cargo holds including upper and lower end attachments and adjacent
shell plating.
2 All transverse web with associated plating and longitudinals in all ballast tanks

3 All transverse bulkheads in ballast tanks, including stiffenering systems.

4 All cargo holds transverse bulkheads, including internal structure of upper and lower stools,
where fitted.
5 All deck plating and under deck structure inside the line of hatch openings between all
cargo hold hatches.
6 All cargo hatch covers and coamings.

LIEF MARINE
CLASS ABS OIL TANK(NON DOUBLE HULL) Page 5 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.1 (Age≤5 Years)

1 One(1) transverse section of deck plating for the full beam of the ship within amidships
0.5L,in way of a ballast tank,if any,or a cargo tank used primarily for water ballast

2 Suspect areas throughout the vessel.

3 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

Close-up Survey

1 One(1) complete transverse web frame ring including adjacent structural members in
a ballast wing tank or ballast double hull tank,if any,or in a cargo wing tank used
primarily for water ballast.
2 One(1) deck transverse including adjacent structural members in cargo wing tank.

3 Lower part of transverse bulkhead including girder system and adjacent structural
member
In one(1) ballast wing tank
In one(1) cargo oil wing tank
In one(1) cargo oil center tank

LIEF MARINE
CLASS ABS OIL TANK(NON DOUBLE HULL) Page 6 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.2 (5≤Age≤10 Years)

1 All main deck plating within the amidships 0.5L or cargo area,whichever is longer

2 One(1) transverse section within the amidships 0.5L

3 Plating in two(2) wind-and-water strakes outside amidships 0.5L

4 Internals in forepeak and afterpeak tanks,including plating and stiffeners of forepeak

and afterpeak tank bulkheads

5 Suspect areas throught the vessel.

6 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

Close-up Survey

1 All complete transverse web frame ring including adjacent structural members in
a ballast wing tank or ballast double hull tank,if any,or in a cargo wing tank used
primarily for water ballast.
2 One(1) deck transverse including adjacent structural members.
In each of the remaining ballast tanks,if any.
In one(1) cargo wing tank.
In two(2) cargo center tanks.
3 Both transverse bulkheads including girder system and adjacent structural members in
a ballast wing tank or ballast double hull tank,if any,or in a cargo wing tank used
primarily for water ballast.
4 Lower part of transverse bulkhead including girder system and adjacent structural
members.
In each remaining ballast tank
In one(1) cargo oil wing tank.
In two(2) cargo center tanks.

LIEF MARINE
CLASS ABS OIL TANK(NON DOUBLE HULL) Page 7 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.3 (10≤Age≤15 Years)

1 All main deck plating within the amidships 0.5L or cargo area,whichever is longer

2 Two(2) transverse section within the amidships 0.5L

3 All plating in two(2) wind-and-water strakes port and starboard,full length.

4 Internals in forepeak and afterpeak tanks,including plating and stiffeners of forepeak

and afterpeak tank bulkheads

5 Suspect areas throught the vessel.

6 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

Close-up Survey

1 All complete transverse web frame ring including adjacent structural members in
all ballast tanks and in a cargo wing tank.
2 A minimum of 30% of all complete transverse web frame rings,including adjacent
structural members in each remaining cargo wing tank. (In calculating the 30% minimum
the number of web frame ring is to be rounded up to the next whole integer)
3 A minimum of 30% of deck and bottom transverses including adjacent structural
members in each cargo center tank.(In calculating the 30% minimum, the number of
transverses is to be rounded up to the next whole integer.)
4 All transverse bulkheads, including girder and stiffener systems and adjacent members
in all cargo and ballast tanks.
5 Additional complete transverse web frame rings as considered necessary by the Surveyor

LIEF MARINE
CLASS ABS OIL TANK(NON DOUBLE HULL) Page 8 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.4 Age>15 Years)

1 All main deck plating within the cargo area,all exposed main deck plaing outside of
cargo area and all exposed 1 st tier superstructure deck plating(poop,bridge and
forecastle decks).

2 A minimum of three(3) transverse sections within the amidships 0.5L.

3 All plating in two(2) wind-and-water strakes port and starboard,full length.

4 Internals in forepeak and afterpeak tanks,including plating and stiffeners of forepeak

and afterpeak tank bulkheads

5 All keel and bottom plating, full length.

6 Suspect areas throught the vessel.

7 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

8 Plating of seachests. Shell plating in way of overboard discharge as considered necessary

by the attending Surveyor.

Close-up Survey

1 All complete transverse web frame ring including adjacent structural members in
all ballast tanks and in a cargo wing tank.
2 A minimum of 30% of all complete transverse web frame rings,including adjacent
structural members in each remaining cargo wing tank. (In calculating the 30% minimum
the number of web frame ring is to be rounded up to the next whole integer)
3 A minimum of 30% of deck and bottom transverses including adjacent structural
members in each cargo center tank.(In calculating the 30% minimum, the number of
transverses is to be rounded up to the next whole integer.)
4 All transverse bulkheads, including girder and stiffener systems and adjacent members
in all cargo and ballast tanks.
5 Additional complete transverse web frame rings as considered necessary by the Surveyor

6 Any additional tanks and structure as considered necessaey by the Surveyor.

LIEF MARINE
CLASS ABS OIL TANK(DOUBLE HULL) Page 9 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.1 (Age≤5 Years)

1 One(1) transverse section of deck plating for the full beam of the ship within amidships
0.5L,in way of a ballast tank,if any,or a cargo tank used primarily for water ballast

2 Suspect areas throughout the vessel.

3 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

Close-up Survey

1 One(1) web frame(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 one(1) complete ballast tank(double bottom,double side and double
deck tank,as applicable,even if these tanks are separate). In fore and aftpeak tanks,web
frame means a complete transverse web frame ring including adjacent structural members)
2 One(1) deck transverse including adjacent structural members(or external structure on
deck in way of the tank,where applicable) in a cargo oil tank.
3 One(1) transverse bulkhead including girder system and adjacent structral members,such
as longitudinal bulkheads,girders in double bottom tanks,inner bottom plating,hopper side
inner bottom plating,hopper side,inner hull longitudinal bulkhead and connecting brackets
in one(1) complete ballast tank(double bottom,double side and double deck tank,as
applicable,even if these tanks are separate)
4 Lower part of a transverse bulkhead in one(1) cargo center tank, including girder system
adjacent structural members (such as longitudinal bulkheads) and internal srtucrure of
lower stool, where fitted. Where no center cargo tanks are fitted (as in the case of center
longitudinal bulkhead),transverse bulkheads in port and starboard cargo oil wing tanks are
to be surveyed.
5 Lower part of a transverse bulkhead in one(1) cargo wing tank,including girder system,
adjacent structural members (such as longitudinal bulkheads) and internal srtucrure of
lower stool, where fitted.

LIEF MARINE
CLASS ABS OIL TANK(DOUBLE HULL) Page 10 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.2 (5<Age≤10 Years)

1 All main deck plating within the amidships 0.5L or cargo area,whichever is longer.

2 One(1) transverse section within the amidships 0.5L

3 Plating in two(2) wind-and-water strakes outside amidships 0.5L

4 Internals in forepeak and afterpeak tanks,including plating and stiffeners of forepeak and
afterpeak tank bulkheads.

5 Suspect areas throughout the vessel.

6 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

Close-up Survey

1 All web frame(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 one(1) complete ballast tank(double bottom,double side and double
deck tank,as applicable,even if these tanks are separate). In fore and aftpeak tanks,web
frame means a complete transverse web frame ring including adjacent structural members)
2 The knuckle area of one(1) web frame including adjacent structural members in each
remaining ballast tank(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 meters from
the corners both on the bulkhead and the double bottom)
3 The upper part(5 meters approximately) of one(1) web frame including adjacent structural
members in each remaining ballast tank.
4 One(1) deck transverse including adjacent structural members(or external structure on
deck in way of the tank,where applicable) in two (2) cargo tanks.
5 One(1) transverse bulkhead including girder system and adjacent structural members,such
as longitudinal bulkheads,girders in double bottom tanks,inner bottom plating,hopper side
inner hull longitudinal bulkhead,and connecting brackets in all complete ballast tanks
(double bottom,double side and double deck tank,as applicable,even if these tanks are
separate)
6 Lower part of a transverse bulkhead in two(2) cargo center tanks,including girder system,
adjacent structural members(such as longitudinal bulkheads) and internal structure of
lower stool,where fitted. Where no center cargo tanks are fitted(as in the case of center
longitudinal bulkhead),transverse bulkheads in port and starboard cargo oil wing tanks are
to be surveyed.
7 Lower part of a transverse bulkhead in one(1) cargo wing tank,including girder system,
adjacent structural members(such as longitudinal bulkheads) and internal structure of
lower stool,where fitted.

LIEF MARINE
CLASS ABS OIL TANK(DOUBLE HULL) Page 11 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.3 (10<Age≤15 Years)

1 All main deck plating within the amidships 0.5L or cargo area,whichever is longer.

2 Two(2) transverse sections within the amidships 0.5L

3 All plating in two(2) wind-and-water strakes,port and starboard,full length.

4 Internals in forepeak and afterpeak tanks,including plating and stiffeners of forepeak and
afterpeak tank bulkheads.

5 Suspect areas throughout the vessel.

6 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

Close-up Survey

1 All web frame(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 all complete ballast tanks(double bottom,double side and double
deck tank,as applicable,even if these tanks are separate). In fore and aftpeak tanks,web
frame means a complete transverse web frame ring including adjacent structural members)
2 All web frames,including deck transverse,longitudinal bulkhead vertical girder and cross
ties,where fitted,including adjacent structural members in one(1) cargo tank.
3 One(1) web frame,deck transverse,longitudinal bulkhead vertical girder and cross ties,where
fitted,including adjacent structural members in all remaining cargo tanks.
4 All complete transverse bulkheads including girder system,adjacent structural members
(such as longitudinal bulkheads) and internal structure of lower and upper stools,where
fitted,in all cargo tanks.
5 All complete transverse bulkheads including girder system and adjacent structural members
such as longitudinal bulkheads,inner bottom plating,hopper side,connecting brackets in
all ballast tanks.

LIEF MARINE
CLASS ABS OIL TANK(DOUBLE HULL) Page 12 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.4 (Age>15 Years)

1 All main deck plating within the cargo area,all exposed main deck plating outside of cargo
area and all exposed 1st tier superstructure deck plating(poop,bridge and forecastle decks)

2 A minimum of three(3) transverse sections.

3 All plating in two(2) wind-and-water strakes,port and starboard,full length.

4 Internals in forepeak and afterpeak tanks,including plating and stiffeners of forepeak and
afterpeak tank bulkheads.

5 All keel and bottom plating full length.

6 Suspect areas throughout the vessel.

7 Measurement,for general assessment and recording of corrosion patterns, of structure

members subject to Close-up Survey.

8 Plating of seachests. Shell plating in way of overboard discharges as considered necessary

by the attending Surveyor.

Close-up Survey

1 All web frame(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 all complete ballast tanks(double bottom,double side and double
deck tank,as applicable,even if these tanks are separate). In fore and aftpeak tanks,web
frame means a complete transverse web frame ring including adjacent structural members)
2 All web frames,including deck transverse,longitudinal bulkhead vertical girder and cross
ties,where fitted,including adjacent structural members in one(1) cargo tank.
3 One(1) web frame,deck transverse,longitudinal bulkhead vertical girder and cross ties,where
fitted,including adjacent structural members in all remaining cargo tanks.
4 All complete transverse bulkheads including girder system,adjacent structural members
(such as longitudinal bulkheads) and internal structure of lower and upper stools,where
fitted,in all cargo tanks.
5 All complete transverse bulkheads including girder system and adjacent structural members
such as longitudinal bulkheads,inner bottom plating,hopper side,connecting brackets in
all ballast tanks.
6 Additional transverse areas as deemed necessary by the Surveyor.

LIEF MARINE
CLASS ABS GENERAL CARGO SHIP Page 13 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.1 (Age≤5 Years)

1 Suspect areas

2 Structure members subject to Close-up Survey.

Close-up Survey

1 Selected transverse shell frames in one(1) forward and one(1) aft cargo hold and associated
tween deck spaces.
2 One(1) selected cargo hold transverse bulkhead,including plating,stiffeners and girders.
3 All cargo hold hatch covers and coamings.(plating and stiffeners)

LIEF MARINE
CLASS ABS GENERAL CARGO SHIP Page 14 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.2 (5<Age≤10 Years)

1 Suspect areas

2 One(1) transverse section of deck plating abreast a cargo space hatch opening(i.e.,outside
of cargo hatch opening) within the amidships 0.5L.

3 Measurememt for general assessment and recording of corrosion pattern of those structural
members subject to Close-up Survey.

Close-up Survey

1 Selected transverse shell frames in one(1) forward and one(1) aft cargo hold and associated
tween deck spaces.
2 One(1) transverse bulkhead in each cargo hold,including bulkhead plating,stiffeners and
girders
3 Forward and aft transverse bulkhead in one(1) side ballast tank,including stiffening system.
4 One(1) transverse web with associated plating and framing in two(2) representative water
ballast tanks of each type(i.e.,topside,hopper side,side tank or double bottom tank).
5 All cargo hold hatch covers and coamings(plating and stiffeners)
6 Selected areas of all deck plating inside line of hatch openings.
7 Selected areas of inner bottom plating.

LIEF MARINE
CLASS ABS GENERAL CARGO SHIP Page 15 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.3 (10<Age≤15 Years)

1 Suspect areas

2 Two(2) transverse section within the amidships 0.5L in way of two(2) different catgo spaces.

3 Measurememt for general assessment and recording of corrosion pattern of those structural
members subject to Close-up Survey.

4 Within the cargo length,each deck plate outside line of cargo hatch openings.

5 All wind and water strakes within the cargo length area.

6 Selected wind and water strakes outside the cargo length area.

7 Internals in forepeak and afterpeak tanks,including plating and stiffeners of forepeak and
afterpeak tank bulkheads.

8 All cargo hold hatch covers and coamings(plating and stiffeners)

Close-up Survey

1 All transverse shell frames in the forward lower cargo hold and 25% frames in each of the
remaining cargo holds and tween deck spaces,including upper and lower end attachments
and adjacent shell plating.
2 All cargo hold transverse bulkheads,including bulkhead plating,stiffeners and girders.
3 All transverse bulkheads in ballast tanks,including stiffening system.
4 All transverse webs with associated plating and framing in all water ballast tanks.(i.e.,
topside,hopper side,side tank or double bottom tank).
5 All cargo hold hatch covers and coamings(plating and stiffeners)
6 All deck plating inside line of hatch openings between cargo hold hatches.
7 All areas of inner bottom plating.

LIEF MARINE
CLASS ABS GENERAL CARGO SHIP Page 16 of 16

Thickness Measurement Requirements at Special Periodicals Surveys

Special Periodical Survey No.4 (Age>15 Years)

1 Suspect areas

2 A minimum of three transverse sections in way of cargo spaces within the amidships 0.5L

3 Each deck plate outside line of cargo hatch openings within the cargo length,all exposed
main deck plates full length and all exposed first-tier superstructure deck plates (poop,
bridge and forecastle decks).

4 Each bottom plate including lower turn of bilge within the cargo length,all keel plates full
length and also additional bottom plates in way of cofferdams,machinery space and aft end
of tanks.

5 Duck keel or pipe tunnel plating and internals.

6 All wind and water strakes full length port and starboard.

7 Measurement for general assessment and recording of corrosion pattern of those structural
members subject to close-up survey.

8 Internals in forepeak and afterpeak tanks,including plating and stiffeners of forepeak and
afterpeak tank bulkheads.

9 All cargo hold hatch covers and coamings(plating and stiffeners)

10 Lower strakes and strakes in way of tween decks of all transverse bulkhead in cargo space
together with internals in way.

11 Plating of seachests.Shell plating in way of overboard discharges as considered necessary

by the attending Surveyor.

Close-up Survey

1 All transverse shell frames in all cargo holds and tween deck spaces,including upper and
lower end attachments and adjacent shell plating.
2 All cargo hold transverse bulkheads,including bulkhead plating,stiffeners and girders.
3 All transverse bulkheads in ballast tanks,including stiffening system.
4 All transverse webs with associated plating and framing in all water ballast tanks.(i.e.,
topside,hopper side,side tank or double bottom tank).
5 All cargo hold hatch covers and coamings(plating and stiffeners)
6 All deck plating inside line of hatch openings between cargo hold hatches.
7 All areas of inner bottom plating.

LIEF MARINE