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Simple but accurate calculation method for vessel speed in a minimum capacity lock
Veldman, J.J.; Bousmar, D.; Kortlever, W.; Dam, M.A.C (2018). Simple but accurate calculation method for vessel speed in a minimum capacity lock, in: 34th PIANC World Congress 2018 in Panama City, Panama: papers. pp. [1-20]
In: (2018). 34th PIANC World Congress 2018 in Panama City, Panama: papers. PIANC: [s.l.]. , meer
Beschikbaar in  Auteurs 
Documenttype: Congresbijdrage
Auteurs  Top 
  • Veldman, J.J.
  • Bousmar, D.
  • Kortlever, W.
  • Dam, M.A.C
Abstract
    The increase of vessel size puts pressure on the maximum allowed vessel dimensions in various inland waterways and locks. Waterway authorities are increasingly challenged to allow vessels with dimensions that exceed the design specifications of the lock. Besides the risk of collision with the sill or the lock head, there is also the aspect of the time required to sail in and out of the lock. This paper presents a desk study, prototype measurements, and verification and calibration of a simple but accurate calculation method based on the Schijf`s method for vessel speed (and squat) in the very confined water (blockage ratio: k< 0.7) in a minimum capacity lock. The calculation method has been verified with prototype vessel speed measurements from five locks and one ship lift. As such this paper is a contribution to the understanding of the consequences of larger vessel sizes in the existing lock infrastructure, focussing on the vessel speed during sailing in and out of the lock and the subsequent increase of the lock-cycle time.
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