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GREEN TECH BOSS CAP ful way. Having successfully completed validation tests at a ket is the drive to ? nd the simplest way to address what is hydrodynamic research centre in Sweden, the HBC is under- actually a very simple problem. We have achieved this by going ship model basin trials to verify the ef? ciency gains on several metrics: installation of the HBC takes just ? ve to six larger commercial and naval vessels. Meanwhile, the patent hours, and the product can easily be retro? tted or installed for the HBC is pending, with the support of Strathclyde Uni- on new vessels. Once ? tted, the product can be maintained versity in the patent application process. during routine drydock visits. In addition, the HBC offers re- duced CAPEX compared to existing devices. Thanks to the

A Simpler Solution ease of casting and the lower amount of material required, it

It has become clear to us while developing the HBC that costs signi? cantly less to manufacture than current conven- traditional methods of addressing ships’ energy wastage have tional propeller hubs.

failed to keep pace with the industry’s needs, or to consider the The business case for shipowners is compelling. Taking wider impacts of underwater noise and vibration. Zero propel- the example of a 250m vessel and a fuel consumption of ler hub vortex cavitation can help towards ESG, EEXI and about 35 tonnes per day, operating for approximately 240

CII goals, improve ef? ciency and reduce the costs associated days a year, and assuming a 3% saving return on investment with cavitation induced rudder erosion. Driven by research, is around ? ve months. the HBC is meeting this need in the market and is contributing We have already received signi? cant interest from ship to more sustainable ship operations. owners and propeller manufacturers and are engaging with

Underpinning our efforts in bringing this product to mar- potential partners to take the concept to market.

52 Maritime Reporter & Engineering News • May 2024

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