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Loading computers

After years of experience in the marine industry, Coastdesign has developed a state of the art loading computer that will revolutionize the way you work. By using Hydro, you will make sure your vessel complies with any stability regulations in a precise and intuitive way. 

The software is created in close collaboration with ship owners, crew members, and other industry stakeholders, which was the key to ensuring an intuitive and seamless user experience. This ensures a maximum level of safety for the vessel, crew, and cargo.

Hydro is designed to be both user-friendly, reliable, and accurate!

How does the loading computer work?

Here are some of the key functions of our loading computer:

Real-time Stability Evaluation

Hydro will give the user an overview of the weight and load onboard, and how it may affect ship stability. Specifically, it will monitor the current condition sent by sensors onboard the boat or rig.

Whether vessel stability is checked by direct stability calculations or predefined stability curves, the results will instantly be available to the user on-screen. 

The instant stability check is not limited to the intact or damage criteria, but for any special operation that is defined for the vessel (e.g. anchor handling, fire fighting, towing, etc.). With its flexible new code, Hydro may calculate stability according to all relevant regulations on the fly.


The loading computer may also be used to simulate future operations. If so, the operator will get an accurate presentation of how cargo, ballast, fuel, and other weight might affect ship stability. Perfect for anyone planning a new operation at sea!

Controls whether requirements are met or not

Our loading computer will also make sure that the stability onboard of ships and rigs is satisfactory, and that all government and class regulations are met. For instance, the software is designed to help the user make sure that the vessel meets the IMO requirements.

Applicable for a broad range of vessels

Hydro is a state of the art loading computer that can be used onboard a broad spectrum of vessels. This includes:

Offshore Support Vessels (OSVs)

Being the workforce of the offshore industry, offshore support vessels have a broad spectrum of tasks to fulfill. Today's offshore operations are getting more and more complicated, and specialized tools are required to ensure satisfying results.

Hydro is equipped for calculations of the new offshore stability rules set by IMO Stability Code 2008 (2020 edition). This includes calculations related to anchor handling, towing, fire fighting, and crane heavy lifting.

Semi-submersible rigs

Semi-submersible rigs exist in many different shapes and may be built for a number of purposes – from accommodation to drilling. However, these rigs all have one thing in common: They need to be able to operate in harsh weather conditions, which makes the stability of the unit critical.

Whether the user simulates severe storms, mooring loads, or the ballasting/de-ballasting process, Hydro is very well-versed in all tasks required by the IMO MODU Code.


Whether a jack-up is used as an oil rig or as part of the growing offshore wind market, it has a unique ability to adjust its legs. Hydro’s simulations make it possible to obtain detailed 3D models of the vessel lowering its legs to the sea bed and then raising them above sea level.

Each leg can be set to any position separately, and the effects on buoyancy centers of gravity can be seen immediately.

When a vessel is jacked up out of the water, the reaction forces acting on the legs are calculated based on real loads. Also, if a jack-up is fitted with an offshore crane of any size, the user will be able to see it in a detailed 3D model. This way, the operation as a whole can easily be simulated or followed up.

Tanker / FPSOs

The main property of tankers and FPSOs is the amount and content of their liquid cargo. Users of Hydro may choose from a long list of predefined cargo, or define their own cargo based on API/ASTM tables. 

Due to MARPOL requirements for tankers and FPSOs, quick and precise stability calculations are necessary. In this particular area, Hydro’s new engine shows its full strength! Thanks to parallel processing, advanced and time-consuming calculations can be done in a matter of seconds.

Semi-submersible heavy lifts

As Hydro may be used on multiple computers, it is the perfect tool for both tracking ongoing ballasting procedures and for planning purposes in the office. The user may choose any type or size of transported cargo (both buoyant and non-buoyant).

It is also possible for the user to build their own library of cargo, amongst many other useful functions!

Do you have any questions?

Coastdesign has several decades of experience in the marine industry and knows the importance of intuitive and well-functioning loading computers. Feel free to contact us if you want to know more about the Hydro software.