Hydro International: January-February 2019

Hydro International January-February 2019 cover

The January-February 2019 issue of Hydro International shows a great variety when it comes to the topics of the articles, ranging from an overview piece on oceanography to a in-depth story on offshore surveying for a wind farm project. It also includes stories on the creation depth charts of inland waterways and the design of wave buoys for long-term operation independence.

In this magazine you can find the follow articles:

- Depth of Burial – Galloper Offshore Wind Farm
- Real-time Validation of CoVadem Derived Water Depths at Locations with a Fixated Riverbed
- Design to Deployment: ToughBoy Wave Buoy
- What Is Oceanography and How to Become an Oceanographer
- Resolutions of the IHO

Depth of Burial – Galloper Offshore Wind Farm

Galloper Offshore Wind Farmn June 2018 Bibby HydroMap were commissioned by Innogy Renewables UK Ltd to carry out a depth of burial survey along each of the inter-array cables on the Galloper Offshore Wind Farm. There were two main challenges of the survey which had to be overcome. The first was that each of the inter-array cables had to remain in service throughout survey operations, limiting the survey techniques capable of measuring the depth of burial of the cables. In addition to this, the cables were 33kV inter-array designs, which have a smaller cross-sectional area than other higher voltage cables. Read on...

What is Oceanography?

What Is Oceanography?This article will dig into the field of Oceanography and the trends and methods developed over the past decades. Did you know that marine species compound more than 80% of the Earth’s biodiversity? Or that sea weed and other sea plants living in the ocean produce around 50% of the oxygen in the atmosphere? With this in mind, many efforts are now concentrated on studies of the ocean, such as identification of those beneficial to ocean resources and organisms that can be used as medicines for many critical ailments. Within this article, you will also get familiar with terms like biomimicry, ocean acidification, ocean conveyor belt and Paleoclimatology. Stay tuned! Read on...


CoVademCoVadem has created an up-to-date depth chart of inland waterways. The underlying data obtained came from vessels participating in the CoVadem initiative, each sharing their sensor data in the CoVadem cloud-based processing environment. To make sure the underlying data is both accurate and reliable, we need a method that automatically filters out erroneous measurements. This article presents a method in which measurements are compared in real-time at locations with a fixated riverbed (e.g. not eroding or aggrading over time). Read on...

Designing a Wave Buoy

Designing a Wave BuoyWhen using sea-going equipment, the elements are invariably one of your greatest adversaries. Whether a researcher waiting for a weather window, or a technician maintaining a sensor platform, the waves and weather should never be underestimated as sensor equipment must endure these conditions. Wave buoys represent a considerable design challenge from multiple perspectives. Physical durability is clearly of fundamental importance, but that robustness must be extended into the functionality and performance of the wave buoy system. A wave buoy must also maintain operational independence over extended periods of times – measured not in weeks or months, but often years. The ToughBoy Panchax high precision wave buoy was developed by Eiva in 2014 to fit these requirements. With a dual power source ensuring data collection and transmission, it comes pre-calibrated and ready for deployment in rough weather conditions, with low service requirements and communication costs. Read on...

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