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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan
Firdaus, Nurman
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Earth & Planetary Sciences

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Analisa Hidrodinamika Kapal Container Sarat Rendah Ali, Baharuddin; Firdaus, Nurman; Nurhadi, N
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 14, No 3 (2017): Oktober
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (895.825 KB) | DOI: 10.14710/kpl.v14i3.15594

Abstract

Kapal container sebagai sarana angkutan barang berpengaruh vital terhadap laju percepatan perekonomian nasional. Kondisi perairan Indonesia yang kedalaman dan fasilitas pendukung pelabuhan bervariasi serta efisiensi operasional kapal menjadi pertimbangan dalam mendesain kapal. Penggunaan kapal sarat rendah tipe barge bermesin sebagai pengangkut container, Self Propelled Container Barge (SPCB) saat ini banyak menjadi pilihan operator kapal dalam melayani pengiriman barang dengan container. Penelitian ini menyajikan analisis hidrodinamika kapal SPCB 100 TEUs dengan metode pengujian model meliputi seakeeping, turning dan zig-zag manuvering serta resistance test. Dari hasil uji seakeeping diketahui bahwa respon gerak kapal pada kondisi gelombang sea-state 4 masih dalam batas toleransi dengan memperhatikan kombinasi kecepatan dan arah heading kapal. Kinerja  manuvering turning dan zig-zag kapal dalam batas aman yang ditetapkan IMO. Dari hasil uji resistance didapatkan kecepatan maksimal yang optimum kapal adalah 12 knot. Selain besaran terukur, uji hidrodinamika dengan model memberikan gambaran fenomena saat kapal beroperasi di laut, sehingga menjadi informasi yang penting dalam desain dan operasional kapal.
The Wave Heights Distribution of Random Wave Based on Ocean Basin Firdaus, Nurman; Ali, Baharuddin; Nasir, Mochammad; Muryadin, M
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 17, No 3 (2020): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v17i3.31021

Abstract

The wave height parameter in ocean waves is one of the important information for a marine structure design. The present paper investigates the results of wave heights distribution from laboratory-generated for single sea state. Data of the random wave time series collected at the ocean basin are analyzed using the wave spectrum and compared with the theoretical spectrum in this study. The random wave data is varied with four sea states consisting of sea states 3, 4, 5 and 6 obtained from laboratory measurements. The parameter conditions of generated sea waves are represented by a value of significant wave height and wave peak period in the range of sea states. The individual wave heights data in each sea state are presented in the form of exceedance probability distribution and the predictions using a linear model. This study aims to estimate the wave heights distribution using the Rayleigh and Weibull distribution model. Furthermore, the accuracy of the wave heights distribution data's prediction results in each sea state has been compared and examined for both models. The applied linear models indicate similar and reasonable estimations on the observed data trends.
Co-Authors Baharuddin Ali, Baharuddin Muryadin, M Nasir, Mochammad Nurhadi