Print Email Facebook Twitter Navigation locks for push tows Title Navigation locks for push tows Author Kooman, C. Corporate name Rijkswaterstaat Project KWP-collection Date 1973-01-01 Abstract All model tests were performed on a scale of 1 : 25. The model ships were self-propelled. For the prototype tests a push tow was used, consisting of a pusher-tug and four barges, with an overall length of about 185 m. and a width of 22.40 m. Wherever possible, the results were checked with those of parallel model tests. An important part of the investigation concerns the shaping of the guiding structures leading towards the lock entrance. These structures are to ensure a smooth and safe lock entry and exit of push tows as well as conventional shipping. One of the main problems of lock-entry navigation is that of push tows getting stuck in the lock entrance owing to the narrow clearance between the barge-formation and the lock chamber. On leaving the lock, push tows are unable to manoeuvre until the whole barge-formation is outside the lock-chamber. During the study of lock entry of push tows a distinction was made between the mechanical and optical functions of the guiding structures. Likewise a distinction is made between the lock entry and exit regarding the design criteria for the shaping of the guiding structures. The various aspects of mechanical guidance were studied, and model tests were carried out to investigate the optical properties of variously shaped guiding structures as well as other features, such as side-wind protection to shipping. Guiding-light systems were tried out for their role in facilitating lock-maneuvering. From the outcome of this study, and from parallel prototype tests, specifications were drawn up for the design of navigation locks to be used by pushtow shipping. It was found that guiding-light systems do not improve lock-entry maneuvering to any statistically relevant degree. Subject locklock chambership manoeuvring Classification TPL100100 To reference this document use: http://resolver.tudelft.nl/uuid:b4c8dec2-8ad4-4ac6-93df-dfbdfd1f7204 Publisher Rijkswaterstaat Source Rijkswaterstaat communications 16 Part of collection Hydraulic Engineering Reports Document type report Rights © Cees Kooman Files PDF Kooman1973.pdf 25.88 MB Close viewer /islandora/object/uuid:b4c8dec2-8ad4-4ac6-93df-dfbdfd1f7204/datastream/OBJ/view