TY - JOUR TT - Resistance Reduction Studies by Means of Increasing the Beam with Waterline Parabolization AU - Danışman, Devrim Bülent AU - Gören, Ömer AU - Çalışal, Sander PY - 2017 DA - April JF - Gemi ve Deniz Teknolojisi JO - GDT PB - TMMOB Gemi Mühendisleri Odası WT - DergiPark SN - 1300-1973 SP - 66 EP - 79 IS - 207 KW - Hull form optimization KW - beam increment KW - waterline parabolization KW - wave resistance KW - cost analysis. N2 - Ithas been more than a decade since Calisal et al. (2002) proposed the concept ofreduction of the resistance by increasing the beam. Although this is acontroversial concept compared to the traditional approach which adopts that thecoefficients of residual resistance vary with the beam to the power of 2. The authors,during the course of resistance reduction studies, have disclosed that the newpresent concept has the ability to reduce the resistance for the Froude numberinterval of 0.2 – 0.4. Accordingly, a review of the authors’ previous work ispresented here from the resistance point of view as well as from the seakeepingpoint of view. Moreover, the production cost due to increasing the beam is alsoexamined and explained. The studies presented include mathematical,computational and experimental results.  CR - Calisal, S.M., Vyselaar, D., Klaptocz, V. and Goren, O. (2009). “A resistance reduction study of a trimaran using waterline parabolization”, Marine Technology, Vol. 46, No. 2, 91-98. CR - Calisal S., Tan, J., Sireli, M. and Goren. O. (2009). “A systematic investigation of ship resistance reduction by beam increment for small craft”, The Journal of Ocean Technology, Vol. 4, No 3, 57-72. CR - Calisal, S.M., Danisman, D.B., Goren, O., Gould, K., Maurice, P. and Klaptocz, V. (2009). “Reduction of wave resistance of displacement vessels by waterline parabolization”, SNAME Annual Meeting, Providence, Paper No. 2009-053. CR - Calisal, S.M., Goren, O. and Danisman, D.B. (2002). “Resistance reduction by increased beam for displacement-type ships”, Journal of Ship Research, Vol. 46, No. 3, 208-213. CR - Dawson, C.W. (1977). “A practical computer method for solving ship-wave problems”, Proceedings, 2nd Int. Conf. on Numerical Ship Hydrodynamics, Berkeley, 30-38. CR - Deli, O., Goren, O., Calisal, S. (2016). “Parabolization and Structural Integrity of Side Bulb Applied Platform Supply Vessel Hull Form”, Proceedings of PRADS2016, 4th – 8th September, Copenhagen, Denmark. CR - Ennis, K. J., Dougherty, J. J., Lamb, T., Greenwell, C. R., Zimmermann, R. (1997). “Product-Oriented Design and Construction Cost Model”, SNAME Ship Production Symposium, April 21-23, New Orleans, Louisiana. CR - Goren, O., Calisal, S.M. and Danisman, D.B. “Mathematical programming basis for ship resistance reduction through the optimization of design waterline”, submitted for publication to the Journal of MS&T. CR - Gotman, A. (1998). “The comparative criterion in deciding on the ship hull form with least wave resistance”, Proceedings, Colloquium EUROMECH 374, Poitiers, 277-284. CR - Gould, K., Calisal, S.M., Mikkelsen, J., Goren, O., Okan, B. and Kim, Y-T. (2010). “Powering and seakeeping characteristics of a displacement hull form with waterline parabolization”, Proceedings, ASME 29th Int. Conf. on Ocean & Arctic Eng. (OMAE), Shangai, Paper No. 2010-20951. CR - Kent, J.L. (1919). “Model experiments on the effect of the beam on the resistance of mercantile ship forms”, Transactions, Institute of Naval Architects, Vol. LXI, 311-319. CR - Weinblum, G.P. (1950). “Analysis of wave resistance”, Davit W. Taylor Model Basin, TMB Report 710, Washington, 27. CR - Wehausen, J.V., Reichtert,G. and Gauthey, J.R. (1961). “On the resistance of ships”, Institute of Engineering Research Series, Series 82, Issue #21, iii+55. CR - Wehausen, J.V. and Laitone, E.V. (1960). “Surface Waves”, Handbuch der Physik, W. Flugge, (Ed.), Vol. 9, SpringerVerlag, Berlin, 446-778. UR - https://dergipark.org.tr/tr/pub/gdt/issue//303641 L1 - https://dergipark.org.tr/tr/download/article-file/290536 ER -