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Build into the sea

The Perpetuma System also offers the possibility of the Buffer Dock to be build into the sea. The shallow water is fine for Buffer Dock and we win precious space on land and huge savings on dredging. On the other hand, giant container ships with enormous depth way benifit again from the deep quay placed more inside the sea.

The Buffer Dock

This is a section of water between the first and second pier where pushing rafts move cargo.
Here the cargo can be buffered for both import and export.
On the first pier straddlers are no longer necessary, the first crane loads the cargo directly onto the pushing rafts without loss of time.
Here the vessel‘s mooring time is considerably reduced.

Import cargo

They are ready in the buffer dock to receive import cargo directly from the first crane. Each raft is able to move ~144 TEUs, no more straddlers under the first crane.

Export cargo

Cargo for export is ready before the vessel arrives. More time for cargo planners.

First crane on front pier

The first crane on the front pier no longer has to take into account straddlers racing underneath, as there are no more straddlers.
This allows for several cranes to be places near a vessel.
Currently whilst a team of four straddlers and a crane reach 32 TEUs per hour we are able to reach between 50 and 60 TEUs per hour.

Inland navigation

Inland vessels are able to load and unload cargo directly under the second crane through a lock. This leaves the front pier available to seagoing vessels.

Lorries

Lorries are brought directly to the stack under the second crane to load or unload cargo.

Trains

Trains are brought directly to the stack under the second crane to load and unload cargo.

Shifters and speed shifters

Here shifters and speed shifters are used to move cargo in the stack. Shifters are able to move around and speed shifters move back and forth.

Late cargo

Along this track late cargo can still be taken to the first crane. As there are no more straddlers this can take place safely.

Access roads for maintenance and servicing

With these access roads each location is made accessible for maintenance and servicing.

Maintenance track for second crane

Each second crane can be brought to a maintenance hangar on this track for periodic maintenance.

Degassing, gassing up and/or scanning of containers

Separate locations in the terminal can be equipped to degas, gas up and/or scan containers.

Own energy supply

By installing windmills self-sufficient energy can be supplied.

Office buildings

Buildings for administrative and technical personnel are centrally located and easily accessible with underground car parks.

Cargo storage

The section of the "Perpetuma terminal" where containers are stored can be fully automated with PC-controlled portal cranes and GPS locations linked to cargo.
Currently stacking height is a maximum of 3 in a terminal, resulting in an average of ~ 0.2 TEUs/m².
The section of the "Perpetuma terminal" where the containers are stored, have a stacking height of at least six resulting in an average of ~0.36 TEUs/m² and this is increased to ~0.6 TEUs/m² for empty containers.
In the section of the "Perpetuma terminal" where the containers are stored separate spaces (bunkers) can be provided where all containers containing explosive material can be stored.
In the walls around the second crane all manner of utilities can be fitted, such as a sprinkler system to fight fires, lighting, electrical connections for cooling containers, etc.
Separate spaces are planned for customs and quarantined containers can be stored separately.