Transport Guidance for Steel Cargoes

American Club: Transport Guidance for Steel Cargoes
50
(iii) chocks (wedges) should be laid between slabs as an additional measure to
prevent sliding of steel slab cargo in such instances as seen in Figure 5.27 and
5.28; and
(iv) any wooden dunnage laid athwartships at intervals along the length of the
steel plate should be aligned vertically as shown in Figure 5.22.
(4) dunnage should be of sufficient height dimensions to allow for ease of load
and discharge; and
(5) Shorter plates should be placed on top of longer plates so there is no significant
overhang of plates stacked on top that would need additional dunnage. As a rule of
thumb for heavy steel plate, the horizontal spacing of the dunnage should be no
more than 10 feet (3 meters) apart.
5.5.2.4 Structural steel. This type of steel cargo may be loose or in bundles. The pieces or bundles
should be stowed fore and aft with timber dunnage between each tier. The dunnage
should be placed in a number of lines athwartships on the tank top and then between
each tier so that the dunnage is aligned vertically. This dunnaging should also be
properly spaced horizontally to prevent deformation during transit. Timber chocks
(wedges) may also be required in gaps between adjacent items to prevent shifting or
movement of the cargo.
5.5.2.5 Small and large diameter pipes. Pipes, almost invariably, should be stowed in a fore and
aft direction without timber between each tier but at the cantelines of the pipes being
stowed below. Some types of pipe or bundles of pipes might need particular stowage
arrangements. For example, pipes with one bell end or those with a surface coating
which might not be abraded. In such circumstances, appropriate dunnaging arrangements
should be provided by the charterer/shipper prior to loading.
5.5.2.6 California Block Stowage (CBS). The CBS method of stowing steel slab cargoes was
developed some years ago for the California steel industries’ trade between South and
North America. It was intended to lower costs through the reduction of cargo handling by
stevedores. However, this system of stowage should be carried out under the supervision
of those with specialist knowledge of the techniques involved. The method involves
loading semi-finished steel slabs to form a free-standing stow. The slabs are loaded fore
and aft with minimal dunnage under and between the slabs. The American Club, like many
other International Group of P&I Clubs, does not recommend the CBS method of stowage.
However, should vessel owners find themselves under pressure to agree to the CBS

American Club: Transport Guidance for Steel Cargoes
51
method, the American Club has issued guidance as set forth in

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