24/04/2023
DID YOU KNOW?! that there different Bulk carrier types by function and design?
Conventional Bulk Carriers
- Have built-in hatchways
- Have between five and nine holds depending on their size and capacity.
- Have cranes onboard to assist in loading and unloading cargo.
Geared Bulk Carriers
- Usually in the handysize to handymax size range, although a few Panamax are geared.
- Have holds that are covered by hatch covers.
- Equipped with derricks, cranes or conveyor belts and do not need port facilities to load or unload cargo.
Gearless Bulk Carriers
- Do not have derricks, cranes or conveyor belts onboard and so need the help of port facilities or other vessels to load or unload cargo.
- They can only call at ports that have loading and unloading facilities, making them less flexible than geared bulkers.
- They are cheaper to build, operate and maintain than bulkers with onboard equipment such as cranes or conveyor belts.
- They are some of the largest bulk carriers but are spread across all size classes.
Combined Bulk Carriers
- Cargo may be dry bulk or liquid bulk commodities.
- Both types of cargo can be transported at the same time.
- Dry cargo is held in the hold and the liquid cargo in wing tanks.
- Not a common vessel as they are relatively more expensive to build.
Self-Discharging Bulk Carriers
- Equipped with conveyor belts, excavators or cranes and do not need port facilities to load or unload cargo.
- Can discharge their cargo onto the quayside but also into a barge, warehouse, or hopper.
BIBO (Bulk In, Bags Out) Bulk Carriers
- Cargo is loaded as loose bulk but onboard equipment enables the cargo to be ‘bagged’ whilst unloading for a faster port turnaround.
Laker Bulk Carriers
- Most commonly found in the Great Lakes (USA and Canada.)
- Have a longer lifespan than ocean-going vessels as they sail in freshwater as opposed to saltwater and are therefore under less threat from corrosion.
- The superstructure (accommodation, bridge etc.) is usually located at the front of the vessel to make it easier to transit locks.