Maritime

Next generation container lashing

Frequently asked questions

RSCS+: Long-haul approach

How can I get access to the RSCS+ application?

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To gain access to this application, please visit the RSCS+ application page on our Veracity data platform. If you do not have a Veracity account yet, you can register here.

Is my once calculated route restricted to be used only for specific vessel or can I use it for my whole fleet?

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The owner of an individual route can distribute and apply the route specification on all vessels within their management team.

RSCS+: Short voyage – weather-dependent lashing approach

How precise should the input of the significant wave height be?

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The applicable maximum significant wave height can be entered using just the first digit or it can be rounded up to the next 0.5 metres.

What is the minimum significant wave height required by DNV GL?

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There is no limitation on the minimum significant wave height you can use in our calculation form, however a reduction factor of no less than 0.3 may be applied.

Does DNV GL require any specific source of weather data?

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It is the responsibility of the vessel’s Master to choose a reliable source for the weather forecast.

Can the reduction factor lead to lashings not being required at all?

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This may be the case if the environment and loading conditions allow for it.

How the crew should file selected weather forecast data?

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The chosen weather forecast shall be filed together with the calculation documentation for application of the weather-dependent acceleration reduction.

Modern Deck Container Stowage: New lashing rules and StowLash3D

What does a three-dimensional container lashing system model mean?

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In the past, container lashing was simplified by applying simple spring systems separately for the idealization of each container end. The new calculation approach applies a finite element model for each container, which represents the complete structural characteristics based on full-scale measurements. Of course, all lashings and twistlocks are considered as separate non-linear elements within the 3D model of the container stack. This means the container ends now interact in terms of strength.

What container types are included in the calculation method?

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The calculation method is ready for all commonly used container types, for example with lengths of 20, 30, 40, 45, 48 or 53 feet, including different heights of containers. DNV GL is working on the development of further container types, to be introduced in future releases of StowLash3D.

How did DNV GL validate the correctness of the new calculation method?

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During the development process, DNV GL performed the full-scale tests with randomly picked used containers to measure container stack behaviour, including deformations and reaction forces. The test was performed under controlled conditions using high-end measurement tools.

How can I calculate my loading case with the new method?

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If you are interested in checking your loading case according to our new calculation method, you can use our intuitive StowLash3D software. Our calculation method is also available for third-party software through the easy-to-implement Software Development Kit (SDK).

How can I implement the new calculation method in my software?

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On request, DNV GL provides the Software Development Kit (SDK), which is easy to implement and free of charge. You can apply for the SDK for StowLash3D using our request form available here.

How much does the StowLash3D licence cost?

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Our StowLash3D software is distributed free of charge. Simply apply for the installation package using our request form available here.