3/25/2022

Container Ship Slots

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  1. Container Ships Losing Cargo
  2. Container Ship Lost In Hurricane
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A container is loaded and then brought to the port by a trucking company. Bringing containers to the port or from the port is called 'drayage'.
The most common containers are 20 foot dry and 40 foot dry containers example shown on left above. There are also refer (refrigerated), high cube, 45 foot, flat racks, open top, open side, liquid and many other specialty containers available for every conceivable cargo load.
The container is kept at the port in the container stacks until the designated ship arrives.
Once the designated ship has arrived, the container is brought to the ships side by a special chassis and cab called a bomb cart (photo above). At most ports container movement is computer controlled. It is necessary to place each container in its correct position on the ship based on important factors such as container weight and the port designated for off loading.
The container gantry crane attaches to the container and lifts it off the truck (left photo above). The truck drives out from under the container. The container is held at the truck flat bed height for attachment of the securing fittings (right photo above).
Depending on the ship configuration and if the container will be secured above decks or below the hatch covers the Stevedores (1 on each end of the container) take the proper container fitting out of the flat rack twistlock bins and attach them to the container corners. Flat rack bins can be seen on the deck in the picture above (left photo).
For above deck stowage:
No fitting needed (For the first layer above deck some ships keep the twistlock permanently in the container foundation)
No fitting needed (if cell guides are used above deck)
Fully Automatic Twistlocks (automatic lock and unlock)
Semi Automatic Twistlocks (automatic lock and manual unlock)
Midlocks (if two 20 foot containers are stowed in a 40 foot slot then midlocks are used where the containers meet)
For below deck stowage:
No fitting needed (if cell guides are used below deck)
Hanging Stackers (hang from the upper container in the stack but don't lock on container below)
After the Stevedores have placed the fittings in the container corners (if needed) the crane moves the container to the correct position on the ship. The container is lowered and released. If an automatic or semi automatic twistlock is used in the container corners the weight of the container locks the fittings at the container corners onto the container below.
The above photo shows a container ship that uses no hatch covers. The cell guides run from the tank tops at the bottom of the ship to the maximum container height. On a ship like this the containers can be loaded without fittings directly into the cell guides. Cell guides are metal structures that keep the containers in place without any other equipment being needed such as twistlocks, lashing bars or turnbuckles thus making loading and unloading faster and less costly.
The disadvantage of a ship such as this is that cell guides inhibit the ships flexibility in that it can not take a variety of container sizes and in addition the number of overall containers is reduced due to the stack weights (the number of containers in a stack are limited by overall weight).
Below deck containers (below the hatch covers) are held in place side to side but are not locked to the above or below containers. Below deck containers need no additional securing. The hatch covers are put in place and then containers can be loaded on top of the hatch cover. Above picture shows a container ship without containers stowed above deck. The hatch covers are removed for access to spaces below deck.
For above hatch cover container stowage after the containers are set in place and the twistlocks are locked (automatically for semi automatic and fully automatic twistlocks) lashing bars and turnbuckles must be attached and tightened. Above picture shows common pattern of turnbuckle and lashing bars used on containerships. There is a cross pattern for every box from deck to bottom of 2nd tier along the complete row. There is an additional pattern of lashing from the bottom of the 3rd tier to the deck on the end container stack and possibly the 2nd to end container stack. In some cases vertical lashing bars are used on the outer stacks only. Vertical lashing bars attach to the bottom of the third container height and help to increase stack weights.
The picture above shows container lashing bars and turnbuckles awaiting container loading. On the right you can see container foundations (square boxes) ready to receive the 1st layer of containers in the stack.
Once the ship is loaded and the container lashing secured by the Stevedore team the ship can depart port.
The process is reversed for unloading.
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Built for the ground level domestic storage market, open sided shipping containers are a good alternative for customers that need special access to load and empty their containers from the side.

Bay = each container vessel is split into compartments which are termed as Bay and depending on the size of the ship it will proceed from 01 to 40 (for example) where Bay 01 is the bay towards the Bow (the front) of the ship and Bay 40 is the Stern (the back) of the ship. Odd numbered bays (1,3,5 etc) means that it is a 20’ stow and Even. Slot- (1)Is the space in a container vessel which can be taken up by one standard twenty foot container. (2)Also used to describe the appointed time to collect or deliver a container from or into the ship’s container terminal yard, (see Time Slot).

More secure and functional than an aftermarket side roll-up door, the accordion closet container doors will partially or fully open the entire side section of the container. Open-Sided Containers have the standard container doors on one end for regular container loading.

Open-sided Storage Containers are built in two sizes, 20’Open-sided (8’6″ tall) and 40′ High-Cube Open-sided (40HCOS). The 40′ units are built with the 1′ taller high-cube frame (9’6″ tall), whereas the 20′ units are built to the standard 8’6″ height.

Since the shipping lines do not use these open-sided container configurations in their shipping fleets there are no used open-sided units available for purchase. For a used unit with access to the side we recommend having one or more 6′ to 10′ steel roll-up door installed in a standard used shipping container.

Open-sided Storage containers are built at the factory in China and take 1-trip to the US for our domestic storage needs. They offer additional features that containers with roll-up side doors do not have, like opening the entire length of the side of the container or partially opening to the section of the container that you need to access.

20′ Open-Sided Storage Containers

The most common and smallest sized open-sided storage container available is the 20′ unit (20’OS). The side doors open in ~5′ sections until the entire side of the 20′ unit is open. You can choose to open, 5′, 10′, 15′ or the full 20′ side section. With multiple forklift pockets it makes the container easier to move around your site without damaging the unit.

What are the dimensions of a 20′ Open-sided container?

ExteriorMeasurementInteriorMeasurement
Length19′ 10″ 1/2Length19′ 4″ 13/64
Width8′ 0″Width7′ 6″ 3/64
Height8′ 6″Height7′ 6″ 33/64
Side Door OpeningMeasurementContainer WeightsMeasurement
Width18′ 8″ 31/64Tare Weight7,000 lbs
Height7′ 1″ 25/64Payload46,000 lbs


40′ High-Cube Open-sided Storage Containers

The longest and tallest open-sided containers available are the 40′ high-cube containers (9’6″ tall). These units will partially or fully open the entire length of the unit. With the 40′ of side access built into these 40OS units you can easily store the widest or longest of products that would not normally fit into a 40′ container with only standard container doors.

The 40′ Opensided High-Cube containers are designed to open in 10′ door sections giving you the flexibility to access 10′, 20′ 30′ or the entire 40′ of the side of the container.


What are the Dimensions of a 40′ High-Cube Open-Sided Container?

ExteriorMeasurementInteriorMeasurement
Length40′Length39′ 5″
Width8′ 0″Width7′ 5″
Height9′ 6″Height8′ 1/2″
Side Door OpeningMeasurementContainer WeightsMeasurement
Width38′ 8″Tare Weight13,050 lbs
Height7′ 7″Payload39,950 lbs

uses for open-sided storage containers

The majority of open sided container buyers are businesses, governmental organization and the military or anyone who needs to access their container from the side. Storage of snow plows, product wider than 7′ or a site that does not have access from the container ends. The open-sided containers are the most convenient, versatile and easiest units to load.

Slots

What Options are Available & Where are the Container Located?

Container Ships Losing Cargo

Our open-sided units are produced in either Tan, Gray or Blue colors. Occasionally there are units built with doors on both ends of the open-sided containers. Unlike standard containers and because of the open-sided design with the one wall’s ability to move, there are no tie-downs on the walls to secure your goods, to overcome that problem there are fully recessable eye-hooks built into the floors.

Container Ship Lost In Hurricane

Open-sided storage containers are located in most of the major shipping ports in the US and Giant Lock Box can arrange for transportation within the continental United States via tilt-bed trailers, Flatbed trucks and in some locations with crane-trucks.

If you need an open-sided shipping container please fill out our request quote form or you can call our office at 1-866-333-3135 for further details on pricing and availability of our open-sided shipping containers for sale.