Device for reducing the driving power requirement of a watercraft

EP4750666A1Pending Publication Date: 2026-06-03BECKER MARINE SYSTEMS GMBH & CO KG
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
BECKER MARINE SYSTEMS GMBH & CO KG
Filing Date
2024-06-20
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing devices for reducing drive performance requirements in watercrafts, such as ships, are limited in energy efficiency due to their material constraints, particularly being fully made of steel, which hinders further improvements in reducing fuel consumption and enhancing strength-to-weight ratios.

Method used

The use of composite materials, specifically glass-reinforced plastic or other fiber-reinforced composites, for constructing at least one inner and one outer fin, which are attached to a flow area arranged in front of a propeller, allowing for reduced weight and increased energy efficiency while maintaining structural integrity under operational loads.

Benefits of technology

The implementation of composite materials for the fins leads to a significant reduction in weight, enhancing energy efficiency and enabling better strength properties, thus improving the overall performance of the device by reducing fuel consumption and maintaining structural stability.

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  • Figure EP2024067254_30012025_PF_FP_ABST
    Figure EP2024067254_30012025_PF_FP_ABST
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Abstract

The invention relates to a device for reducing the driving power requirement of a watercraft, in particular a ship, and for arranging in front of a ship propeller in the direction of flow, comprising a flow guidance surface, in particular a nozzle ring or a partial nozzle ring, at least one inner fin projecting from the flow guidance surface, wherein an end of the inner fin is attached to the flow guidance surface and wherein, when the device is installed in a watercraft, another end of the inner fin is attached to a watercraft, and at least one outer fin projecting from the flow guidance surface, wherein one end of the outer fin is attached to the flow guidance surface and wherein another end of the outer fin is designed as a free end, wherein the at least one inner fin and / or the at least one outer fin are produced from a composite material.
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