01/11/2024
Bay lashing and head lashing – Important methods of load securing
In the field of cargo securing , various techniques are crucial to ensuring the safety of goods during transport . Two important methods in this context are bay lashing and head lashing . These terms are particularly relevant in shipping and container transport , where proper cargo securing is essential to prevent accidents and damage during transport. In this blog post, we will discuss the basics, differences, and areas of application of these two lashing methods .
What is lashing anyway?
" Lashing " generally refers to the securing of cargo with tension belts , chains, wire ropes, or tensioning devices to protect the cargo from shifting, toppling, or other movement during transport. This is especially important for ships and containers exposed to strong forces from waves and wind on the high seas . Without proper securing, the cargo could be damaged or even lost overboard , resulting in significant economic losses and safety risks.
Bay lashing – securing across the entire width
Loop lashing (also called "loop lashing") is a method in which the lashing straps or belts are run across the entire width of the container or loading area . The lashing material is wrapped around the load in a "loop" shape and secured at both ends to hold the cargo in place.
- Applications : Bay lashing is often used for larger, bulky goods or multiple loads that need to be secured across the entire width of the loading area. It is particularly suitable for containers with heavy or irregularly shaped cargo that does not rest directly against the container walls.
- Advantages : This method distributes the securing forces evenly across the width of the container, ensuring better stability. It is also flexible and can be used for various types of cargo.
- Disadvantages : Bay lashing requires more material and is slightly more time-consuming than other lashing methods because it requires precise placement and securing of the loops.
Head lashing – securing at the ends
Head lashing refers to securing cargo at the ends of a container or truck bed . The lashings are stretched from the cargo to the container or vehicle walls to prevent forward or backward movement of the cargo.
- Applications : Head lashing is particularly effective when it comes to preventing goods from slipping longitudinally, for example, with heavy machinery or large individual items. It is often used in combination with other lashing techniques to achieve comprehensive load securing.
- Advantages : It offers an effective way to secure the load against longitudinal movement and can be installed quickly and easily. Head lashing is well-suited to complement other methods for securing the load in all directions.
- Disadvantages : Since head lashing primarily acts longitudinally, it offers less protection against lateral movement of the load. Therefore, it is often necessary to use other securing methods in addition.
Differences between bay lashing and head lashing
While both bay lashing and head lashing serve to secure the load during transport , they differ in their design and area of application:
- Directional effect : Bay lashing acts across the entire width of the loading area and is particularly suitable for lateral stabilization. Head lashing, on the other hand, primarily secures longitudinal movements.
- Material requirements : Bay lashing requires more material because it covers a larger area. Head lashing is more material-efficient but less effective.
- Application : Bay lashing is better suited for irregularly shaped or loose cargo, while head lashing is used for heavy, bulky individual items that may move primarily in one direction.
Combined application of bay lashing and head lashing
In many cases , bay lashing and head lashing are combined to ensure comprehensive load securing . By using both methods together, the load can be secured both laterally and lengthwise , significantly reducing the risk of damage or accidents.
Example application : For large machines transported in a container, the machine can be secured with head lashing to prevent forward and backward movement. In addition, bay lashing is used to stabilize the machine laterally.
FAQ: Bay lashing & head lashing
What is bay lashing?
Loop lashing , also known as loop lashing or strapping , is a form-fitting load securing method. A tensioning strap is looped around the load and both ends are hooked into lashing eyes, ensuring the securing force is applied evenly across the width of the container or loading area . This method is particularly suitable for lateral stabilization of bulky or loosely stacked goods.
What is head lashing and what is it used for?
Head lashing refers to securing the load at the ends of the container or loading area by passing straps over the ends and attaching them to the walls. This method is particularly effective in protecting against longitudinal movement , for example, with heavy individual parts or machinery.
What are the differences between bay lashing and head lashing?
Bay lashing stabilizes the load across the direction of travel and is suitable for lateral securing. Head lashing, on the other hand, works primarily longitudinally to prevent the load from slipping forward or backward . While bay lashing usually requires more material, head lashing is specialized for one-directional movement.
How do you calculate the securing force for bay lashing?
The securing force is determined by the LC (Lashing Capacity) of the straps and attachment points used . With proper use, e.g., by attaching the strap loop to two lashing eyes, the securing force increases in each direction. The permissible tensile force, lashing angle, and friction coefficient according to EN-12195-1 or the company's specifications are relevant for calculations.
What mistakes should be avoided when using lashing systems?
A common mistake with bay lashing and head lashing is insufficient tension or incorrect attachment of the straps , which weakens the securing effect. Too few or incorrect positioning of the lashing devices can also lead to the required securing force not being achieved , which is why the specified stowage plans, lashing angles, and safety guidelines must always be observed.
What methods of load securing are there besides bay lashing and head lashing?
In addition to bay lashing and head lashing, methods such as direct lashing, diagonal lashing, and tie-down lashing are also used for load securing . The choice of method depends on the weight, load dimensions , and transport requirements.
What are typical applications for bay lashing and head lashing?
Both methods are primarily used in shipping, container transport, trucks, and rail transport . They are suitable for heavy, irregularly shaped goods, machinery, equipment, and bundled building materials that need to be secured against lateral and longitudinal movement .
Conclusion on bay lashing and head lashing
Bay lashing and head lashing are important cargo securing techniques , each with its own advantages and applications. Correct application of these methods is essential to ensure safety during transport and prevent damage to the cargo. They are indispensable components of a successful cargo securing concept , particularly in shipping and container transport , where significant movement can occur.
By combining the two methods, transport companies and freight forwarders can ensure that the load is comprehensively secured, reducing both the risk of accidents and the costs associated with potential damage. Those familiar with the different techniques and their targeted use not only ensure smooth transport , but also satisfied customers and partners.