MSC.1/Circ.1440

1 June 2012

ILLUSTRATIONS OF SEGREGATION OF CARGO TRANSPORT UNITS ON BOARD CONTAINERSHIPS AND RO-RO SHIPS

  1. The Maritime Safety Committee, at its ninetieth session (16 to 25 May 2012), having considered the proposal by the Sub-Committee on Dangerous Goods, Solid Cargoes and Containers, at its sixteenth session, with regard to illustrations of segregation of cargo transport units on board containerships and ro-ro ships, which apply to the carriage of packaged dangerous goods in pursuance of the requirements of SOLAS chapter VII and the relevant provisions of the IMDG Code, approved the illustrations of segregation of cargo transport units on board containerships and ro-ro ships, as set out in the attached annex.

  2. Member Governments are invited to bring the illustrations of segregation of cargo ransport units on board containerships and ro-ro ships, as set out in the annex, to the attention of competent authorities, seafarers and others concerned, taking into account the voluntary application date of 1 January 2013 of amendment 36-12 of the IMDG Code pending its envisaged mandatory entry-into-force date of 1 January 2014.

ANNEX

ILLUSTRATIONS OF SEGREGATION OF CARGO TRANSPORT UNITS ON BOARD CONTAINERSHIPS AND RO-RO SHIPS

1
Scope
1.1
The segregation requirements applicable to containerships with hatch covers, hatchless containerships and ro-ro ships are provided in 7.4.3 and 7.5.3 of the IMDG Code. To facilitate familiarization with these requirements and to support training of relevant personnel, the following illustrations have been developed. It should be noted that only the relevant tables in the IMDG Code are legally binding. In case of any discrepancy, they shall take precedence over the illustrations in this circular.
1.2

This circular contains illustrations of segregation of:

  • containers on board containerships with hatch covers (see section 2 of this circular);

  • containers on board hatchless containerships (see section 3 of this circular); and

  • cargo transport units on board ro-ro ships.

2
Illustrations of segregation of containers on board containerships with hatch covers
2.1
The illustrations of this section apply to the segregation of containers which meet the definition of a container within the term of the International Convention for Safe Containers (CSC) 1972, as amended, and are transported on deck and in the cargo holds of containerships or on deck and in the cargo holds of other types of ships provided that these stowage positions are properly fitted to give a permanent stowage of containers during transport.1
2.2
To determine locations in which containers are not permitted to contain dangerous goods that are incompatible with those in a reference container, the following method applies: container spaces (such as one container space, two container spaces) are identified in accordance with the applicable segregation provisions in the direct fore-and-aft and athwartships directions from the reference container. Lines are projected between the outermost corners of the containers occupying these spaces as shown in the figure. Containers located partially or completely between these lines and the reference container shall not contain dangerous goods that are incompatible with those in the reference container.
2.3

The deck/hold layout used for the illustrations is:

– two 20 ft containers stowed in a 40 ft container space

– distance between two 40 ft container spaces is 2 ft (60 cm)

2.4

Explanation of the segregation terms

(1) Reference container 1
(2) Container containing incompatible goods NOT permitted 2
(3) container containing incompatible goods permitted 3
(4) Distance athwarthships (a) one container space 4a
(b) two container spaces 4b
(c) three container spaces 4c
(5) Distance fore and aft (a) one container space 5a
(b) two container spaces 5b

Note 1: All bulkheads and decks shall be resistant to fire and liquids.

Note 2: When an illustration has more than one reference container, only one should be used when interpreting the illustration. When an illustration contains several reference containers, they have to be considered as different examples.

Situation fore and aft and athwartships: 1 container space

Situation 1x1

Situation fore and aft: 1 container space and athwartships: 2 container spaces

Situation 1x2

Situation fore and aft: 2 container spaces and athwartships: 3 container spaces

Situation 2x3

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
ON DECK UNDER DECK
FORE AND AFT No restriction No restriction One on top of the other permitted
ATHWARTSHIPS No restriction No restriction

Away from closed versus closed

1 – Situation closed versus closed

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
CLOSED VERSUS OPEN HORIZONTAL VERTICAL
ON DECK UNDER DECK
FORE AND AFT No restriction No restriction Open on top of closed permitted
Otherwise
NOT in the same vertical line unless segregated by a deck
ATHWARTSHIPS No restriction No restriction

Away from closed versus open

1 – Situation closed versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
OPEN VERSUS OPEN HORIZONTAL VERTICAL
ON DECK UNDER DECK
FORE AND AFT One container space One container space or one bulkhead NOT in the same vertical line unless segregated by a deck
ATHWARTSHIPS One container space One container space

Away from open versus open

1 – Situation open versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
ON DECK UNDER DECK
FORE AND AFT One container space One container space or one bulkhead NOT in the same vertical line unless segregated by a deck
ATHWARTSHIPS One container space One container space

Separated from closed versus closed

2 – Situation closed versus closed

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
CLOSED VERSUS OPEN HORIZONTAL VERTICAL
ON DECK UNDER DECK
FORE AND AFT One container space One container space or one bulkhead NOT in the same vertical line unless segregated by a deck
ATHWARTSHIPS One container space Two container spaces

Separated from closed versus open

2 – Situation closed versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
OPEN VERSUS OPEN HORIZONTAL VERTICAL
ON DECK UNDER DECK
FORE AND AFT One container space One bulkhead NOT in the same vertical line unless segregated by a deck
ATHWARTSHIPS Two container spaces One bulkhead

Separated from open versus open

2 – Situation open versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
CLOSED VERSUS CLOSED
OR
CLOSED VERSUS OPEN
HORIZONTAL VERTICAL
ON DECK UNDER DECK
FORE AND AFT One container space One bulkhead NOT in the same vertical line unless segregated by a deck
ATHWARTSHIPS Two container spaces One bulkhead

Separated by closed versus closed or closed versus open

3 - Situations closed versus closed and closed versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
OPEN VERSUS OPEN HORIZONTAL VERTICAL
ON DECK UNDER DECK
FORE AND AFT Two containers space Two bulkheads NOT in the same vertical line unless segregated by a deck
ATHWARTSHIPS Three container spaces Two bulkheads

Separated by open versus open

3 – Situation open versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT One bulkhead and minimum horizontal distance of 24 m* Prohibited
ATHWARTSHIPS Prohibited

* Containers not less than 6 m from intervening bulkhead.

Separated longitudinally under deck closed versus closed

4 – Situation closed versus closed - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS OPEN
OR
OPEN VERSUS OPEN
OR
CLOSED VERSUS CLOSED
HORIZONTAL VERTICAL
ON DECK
FORE AND AFT Minimum horizontal distance of 24 m Prohibited
ATHWARTSHIPS Prohibited

* Containers not less than 6 m from intervening bulkhead.

Separated longitudinally on deck closed versus open or open versus open or closed versus closed

4 – Situation closed versus open, open versus open and closed versus closed – ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS OPEN
OR
OPEN VERSUS OPEN
HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT Two bulkheads Prohibited
ATHWARTSHIPS Prohibited

* Containers not less than 6 m from intervening bulkhead.

Separated longitudinally under deck closed versus open or open versus open

4 – Situation closed versus open and open versus open – UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.

3
Illustrations of segregation of containers on board hatchless containerships
3.1
The illustrations of this section apply to the segregation of containers which are transported on board hatchless containerships provided that stowage positions are properly fitted to give permanent stowage of the containers during transport.2
3.2
To determine locations in which containers are not permitted to contain dangerous goods that are incompatible with those in a reference container, the following method applies: container spaces (such as one container space, two container spaces) are identified in accordance with the applicable segregation provisions in the direct fore-and-aft and athwartship directions from the reference container. Lines are projected between the outermost corners of the containers occupying these spaces as shown in the figure. Containers located partially or completely between these lines and the reference container shall not contain dangerous goods that are incompatible with those in the reference container.
3.3

The deck/hold layout used for the illustrations is:

  • two 20’ containers stowed in a 40’ container space
  • distance between two 40’ container spaces is 2 feet (60 cm)
3.4

Explanation of the segregation terms

(1) Reference container 1
(2) Container containing incompatible goods NOT permitted 2
(3) container containing incompatible goods permitted 3
(4) Distance athwarthships (a) one container space 4a
(b) two container spaces 4b
(c) three container spaces 4c
(5) Distance fore and aft (a) one container space 5a
(b) two container spaces 5b

Note 1: All bulkheads and decks shall be resistant to fire and liquids.

Note 2: When an illustration has more than one reference container only one should be used when interpreting the illustration. When an illustration contains several reference containers they have to be considered as different examples.

Situation fore and aft and athwartships: 1 container space

Situation 1x1

Situation fore and aft: 1 container space and athwartships: 2 container spaces

Situation 1x2

Situation fore and aft: 2 container spaces and athwartships: 3 container spaces

Situation 2x3

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
ON DECK
FORE AND AFT No restriction One on top of the other permitted
ATHWARTSHIPS No restriction

Away from closed versus closed

1 – Situation closed versus closed - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT No restriction One on top of the other permitted
ATHWARTSHIPS No restriction

Away from closed versus closed

1 – Situation closed versus closed - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
CLOSED VERSUS OPEN HORIZONTAL VERTICAL
ON DECK
FORE AND AFT No restriction Open on top of closed permitted
Otherwise
NOT in the same vertical line
ATHWARTSHIPS No restriction

Away from closed versus open

1 – Situation closed versus open - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
CLOSED VERSUS OPEN HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT No restriction Open on top of closed permitted
Otherwise
NOT in the same vertical line
ATHWARTSHIPS No restriction

Away from closed versus open

1 – Situation closed versus open - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
OPEN VERSUS OPEN HORIZONTAL VERTICAL
ON DECK
FORE AND AFT One container space NOT in the same vertical line
ATHWARTSHIPS One container space

Away from open versus open

1 – Situation open versus open - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
OPEN VERSUS OPEN HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT One container space or one bulkhead NOT in the same vertical line
ATHWARTSHIPS One container space

Away from open versus open

1 – Situation open versus open - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
ON DECK
FORE AND AFT One container space NOT in the same vertical line
ATHWARTSHIPS One container space

Separated from closed versus closed

2 – Situation closed versus closed - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT One container space or one bulkhead NOT in the same vertical line
ATHWARTSHIPS One container space

Separated from closed versus closed

2 – Situation closed versus closed - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
CLOSED VERSUS OPEN HORIZONTAL VERTICAL
ON DECK
FORE AND AFT One container space NOT in the same vertical line
ATHWARTSHIPS Two container spaces

Separated from closed versus open

2 – Situation closed versus open - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
CLOSED VERSUS OPEN HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT One container space or one bulkhead NOT in the same vertical line
ATHWARTSHIPS Two container spaces

Separated from closed versus open

2 – Situation closed versus open - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
OPEN VERSUS OPEN HORIZONTAL VERTICAL
ON DECK
FORE AND AFT One container space and not in or above same hold NOT in the same vertical line
ATHWARTSHIPS Two container spaces and not in or above same hold

Separated from open versus open

2 – Situation open versus open - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
OPEN VERSUS OPEN HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT One bulkhead NOT in the same vertical line
ATHWARTSHIPS One bulkhead

Separated from open versus open

2 – Situation open versus open - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
ON DECK
FORE AND AFT One container space and not in or above same hold NOT in the same vertical line
ATHWARTSHIPS Two container spaces and not above same hold

Separated by closed versus closed

3 – Situation closed versus closed - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT One bulkhead NOT in the same vertical line
ATHWARTSHIPS One bulkhead

Separated by closed versus closed

3 – Situation closed versus closed - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
CLOSED VERSUS OPEN HORIZONTAL VERTICAL
ON DECK
FORE AND AFT One container space and not in or above same hold NOT in the same vertical line
ATHWARTSHIPS Two container spaces and not above same hold

Separated by closed versus open

3 – Situation closed versus open - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
CLOSED VERSUS OPEN HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT One bulkhead NOT in the same vertical line
ATHWARTSHIPS One bulkhead

Separated by closed versus open

3 – Situation closed versus open - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
OPEN VERSUS OPEN HORIZONTAL VERTICAL
ON DECK
FORE AND AFT Two container spaces and not in or above same hold NOT in the same vertical line
ATHWARTSHIPS Three container spaces and not above same hold

Separated by open versus open

3 – Situation open versus open - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
OPEN VERSUS OPEN HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT Two bulkheads NOT in the same vertical line
ATHWARTSHIPS Two bulkheads

Separated by open versus open

3 – Situation open versus open - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
ON DECK
FORE AND AFT Minimum horizontal distance of 24 m and not in or above same hold Prohibited
ATHWARTSHIPS Prohibited

Separated longitudinally closed versus closed

4 – Situation closed versus closed - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS CLOSED HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT One bulkhead and minimum horizontal distance of 24 m* Prohibited
ATHWARTSHIPS Prohibited

* Containers not less than 6 m from intervening bulkhead.

Separated longitudinally closed versus closed

4 – Situation closed versus closed - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS OPEN
OR
OPEN VERSUS OPEN
HORIZONTAL VERTICAL
ON DECK
FORE AND AFT Minimum horizontal distance of 24 m and not above same hold Prohibited
ATHWARTSHIPS Prohibited

Separated longitudinally closed versus open or open versus open

4 – Situation closed versus open and open versus open - ON DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS OPEN
OR
OPEN VERSUS OPEN
HORIZONTAL VERTICAL
UNDER DECK
FORE AND AFT Two bulkheads Prohibited
ATHWARTSHIPS Prohibited

Separated longitudinally closed versus open or open versus open

4 – Situation closed versus open and open versus open - UNDER DECK

Note: All bulkheads and decks shall be resistant to fire and liquids.


4
Illustrations of segregation of cargo transport units on board ro-ro ships
4.1
The illustrations of this section apply to the segregation of cargo transport units which are transported on board roll-on/roll-off ships or in roll-on/roll off cargo spaces.3
4.2
To determine locations in which cargo transport units are not permitted to contain dangerous goods that are incompatible with those in a reference cargo transport unit, the following method applies: locations where incompatible dangerous goods are not permitted with respect to the referenced cargo transport unit are first determined in the direct fore and aft and athwartships directions. The relevant segregation distances to be considered in both directions are defined in metres as shown in the figure. Cargo transport units located partially or completely within these distances from the reference cargo transport unit shall not contain dangerous goods that are incompatible with those in the reference cargo transport unit.
4.3

The standard dimension of a cargo transport unit used for the illustrations is:

  • length: 12 m
  • width: 2.5 m
4.4

Explanation of the segregation terms

(1) Reference cargo transport unit RoRo segregation terms 1
(2) CTU containing incompatible goods NOT permitted RoRo segregation terms 2
(3) CTU containing incompatible goods permitted RoRo segregation terms 3
(4) Distance athwartships:
(a) 3 m RoRo segregation terms 4 a
(b) 6 m RoRo segregation terms 4 b
(c) 12 m RoRo segregation terms 4 c
(d) 24 m RoRo segregation terms 4 d
(5) Distance fore and aft:
(a) 3 m, 6 m, 12 m RoRo segregation terms 5 a
(b) 24 m RoRo segregation terms 5 b
(c) 36 m RoRo segregation terms 5 c
(d) 48 m RoRo segregation terms 5 d

Note 1: All bulkheads and decks shall be resistant to fire and liquid.

Note 2: When an illustration has more than one reference cargo transport units, only one should be used when interpreting the illustration. When an illustration contains several reference cargo transport units, they have to be considered as different examples.

“AWAY FROM” .1
CLOSED VERSUS CLOSED
OR
CLOSED VERSUS OPEN
ON DECK UNDER DECK
FORE AND AFT No restriction No restriction
ATHWARTSHIPS No restriction No restriction

Away from closed versus closed or closed versus open

1 – Situations closed versus closed and closed versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“AWAY FROM” .1
OPEN VERSUS OPEN ON DECK UNDER DECK
FORE AND AFT At least 3 m At least 3 m
ATHWARTSHIPS At least 3 m At least 3 m

Away from open versus open

1 – Situation open versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
CLOSED VERSUS CLOSED ON DECK UNDER DECK
FORE AND AFT At least 6 m At least 6 m or ONE bulkhead
ATHWARTSHIPS At least 3 m At least 3 m or ONE bulkhead

Separated from closed versus closed

2 – Situation closed versus closed

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
CLOSED VERSUS OPEN ON DECK UNDER DECK
FORE AND AFT At least 6 m At least 6 m or ONE bulkhead
ATHWARTSHIPS At least 3 m At least 6 m or ONE bulkhead

Separated from closed versus open

2 – Situation closed versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED FROM” .2
OPEN VERSUS OPEN ON DECK UNDER DECK
FORE AND AFT At least 6 m At least 12 m or ONE bulkhead
ATHWARTSHIPS At least 6 m At least 12 m or ONE bulkhead

Separated from open versus open

2 – Situation open versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
CLOSED VERSUS CLOSED ON DECK UNDER DECK
FORE AND AFT At least 12 m At least 24 m + deck
ATHWARTSHIPS At least 12 m At least 24 m + deck

Separated by closed versus closed

3 – Situation closed versus closed

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
CLOSED VERSUS OPEN ON DECK UNDER DECK
FORE AND AFT At least 24 m At least 24 m + deck
ATHWARTSHIPS At least 24 m At least 24 m + deck

Separated by closed versus open

3 – Situation closed versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED BY A COMPLETE COMPARTMENT OR HOLD FROM” .3
OPEN VERSUS OPEN ON DECK UNDER DECK
FORE AND AFT At least 36 m Two decks or TWO bulkheads
ATHWARTSHIPS Prohibited Prohibited

Separated by open versus open

3 – Situation open versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS CLOSED ON DECK UNDER DECK
FORE AND AFT At least 36 m Two bulkheads or at least 36 m + two decks
ATHWARTSHIPS Prohibited Prohibited

Separated longitudinally closed versus closed

4 – Situation closed versus closed

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
CLOSED VERSUS OPEN ON DECK UNDER DECK
FORE AND AFT At least 36 m At least 48 m including TWO bulkheads
ATHWARTSHIPS Prohibited Prohibited

Separated longitudinally closed versus open

4 – Situation closed versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


“SEPARATED LONGITUDINALLY BY AN INTERVENING COMPLETE COMPARTMENT OR HOLD FROM” .4
OPEN VERSUS OPEN ON DECK UNDER DECK
FORE AND AFT At least 48 m Prohibited
ATHWARTSHIPS Prohibited Prohibited

Separated longitudinally open versus open

4 – Situation open versus open

Note: All bulkheads and decks shall be resistant to fire and liquids.


  1. For containerships with partly hatchless container cargo spaces, the illustrations of section 3 apply to such spaces.

  2. For partly hatchless containerships with hatch-covered container cargo spaces, the illustrations of section 2 apply to such spaces.

  3. For ro-ro ships which carry containers on decks or in holds, the illustrations of section 2 apply to such spaces.