Vol 14, No 2 (2010) > Articles >

Development of Technology Parameter Towards Shipbuilding Productivity Predictor Using Cubic Spline Approach

Bagiyo Suwasono 1 , Sjarief Widjaja 1 , Achmad Zubaydi 1 , Zaed Yuliadi 2 , I Nyoman Budiantara 3


  1. Jurusan Teknik Perkapalan, FTK, Institut Teknologi Sepuluh Nopember, Surabaya 60111
  2. PT. PAL Indonesia, Ujung Surabaya 60155
  3. Jurusan Statistika, FMIPA, Institut Teknologi Sepuluh Nopember, Surabaya 60111



Ability of production processes associated with state-of-the-art technology, which allows the shipbuilding, is customized with modern equipment. It will give impact to level of productivity and competitiveness. This study proposes a nonparametric regression cubic spline approach with 1 knot, 2 knots, and 3 knots. The application programs Tibco Spotfire S+ showed that a cubic spline with 2 knots (4.25 and 4.50) gave the best result with the value of GCV = 56.21556, and R2 = 94.03%.Estimation result of cubic spline with 2 knots for the PT. Batamec shipyard = 35.61 MH/CGT, PT. Dok & Perkapalan Surabaya = 27.49 MH/CGT, PT. Karimun Sembawang Shipyard = 27.49 MH/CGT, and PT. PAL Indonesia = 19.89 MH/CGT.

Keywords: technology parameter, shipbuilding productivity, cubic spline
Published at: Vol 14, No 2 (2010) pages: 121-127

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