Gnanadevan, R.Mitra, KalyanDeogade, R. B.2023-07-192025-01-212023-07-192022-082001215005https://dspacenew8-imu.refread.com/handle/123456789/1008Dissertation submitted in partial fulfilment of the requirements for the award of degree of Master of Technology in Marine Engineering and ManagementWhen a floating body is towed against a stream of water it experiences drag as a result of the resistance provided by the water. An object’s resistance to motion is made up of air and water drag. Analysis of drag force is necessary to determine the hydrodynamic forces acting on the object which is required for the selection of a propulsion system. The physical model test is one of the most accurate methods because it derives the common solution by taking into account the performance of all parameters. Model alteration, Fabrication and actual experimental testing in a water are part of traditional model testing. Based on the solutions of the model tests, alterations are made to the design of the floating body and experiments are repeated until required results are obtained. Drag force measurement experiments are generally conducted on still water conditions i.e. on a floating platform carrying dead weight or with container of liquid. The present model experiments are conducted under still and monochromatic wave conditions at different rating trolley velocities and the solutions are evaluated for the difference of drag force on floating platform with dead weight and liquid at above and below the centre of gravity of the boat. The experiments will help in analysing impact of the drag force due to the effect of shift in centre of gravity in liquid when partly filled with the same dead weight load on the floating body. This analysis will help in identifying the safety precautionary standards in case of emergency situations due to free surface effects especially for Roll on and Roll off (RO/RO) and multi cargo carriers.en-USDrag analysisModel StudiesMonochromatic wave conditionsDissertation