They

 are bulk carriers without cranes or conveyors. These ships depend on

shore-based equipment at their ports of call for loading and discharging.

Some bulk carriers are built as self unloaders, either by the provision

of derrick grabs, or by trimming the cargo spaces to belt conveyers running

under the holds

These vessels

are designed to transport both liquid and dry

bulk cargoes.

These carriers are

equipped with a complete facility to pack the bulk

material into bags.

They have cranes, derricks or conveyors  that

allow them to load or

discharge cargo in