The numerous ship accidents at sea have usually resulted in tremendous loss and casualties. To prevent such disastrous accidents, a comprehensive investigation into reliable prediction of seakeeping performance of a ship is necessarily required. This paper presents computational fluid dynamics (CFD) analysis on seakeeping performance of a training ship (full scale model) quantified through a Response of Amplitude Operators (RAO) for heave and pitch motions. The effects of wavelengths, wave directions and ship forward velocities have been accordingly taken into account. In general, the results revealed that the shorter wavelengths (l/L ? 1.0) have insignificant effect to the heave and pitch motions performance of the training ship, which means that the ship has good seakeeping behavior. However, the further increase of wavelength was proportional with the increase of RAO for her heave and pitch motions; whilst it may lead to degrade her seakeeping quality. In addition, the vertical motions behavior in the following-seas dealt with higher RAO as compared with case of the head-seas condition. Similarly, the subsequent increase of the ship forward velocity was prone to relatively increase of the RAO for her heave and pitch motions especially at l/L ? 2.0. It was merely concluded that this seakeeping prediction using CFD approach provides useful outcomes in the preliminary design stage for safety assessment of the training ship navigation during sailing.
Masyarakat pesisir Jeneponto melakukan usaha budidaya rumput laut secara berkelompok maupun perseorangan. Salah satu kelompok pebudidaya rumput laut di Lingkungan Pattontongan Kecamatan Binamu yaitu Kelompok Pattotongan City. Sarana produksi yang digunakan dalam budidaya rumput laut antara lain perahu. Umumnya perahu fiberglass masih didapatkan dari bantuan atau hibah pemerintah, jarang sekali yang membeli langsung karena terkendala biaya. Sehingga perlu ada upaya untuk dapat menekan biaya perolehan perahu yaitu pebudidaya membuat sendiri perahu. Pada bulan September dan Oktober tahun 2016, melalui program Ipteks Bagi Masyarakat (IBM) Universitas Hasanuddin dilakukan bimbingan dan pelatihan reparasi perahu fiberglass kepada kelompok pembudidaya dengan hasil budidaya mampu mengenal bahan dan peralatan reparasi fiberglass dan teknik-teknik mereparasi lambung perahu. Kemampuan ini belum cukup untuk dapat membuat perahu, maka diperlukan sebuah kegiatan berupa pengayaan keterampilan dalam pembuatan perahu. Hasil yang diperoleh melalui pengayaan keterampilan ini adalah peserta mampu (1) membaca gambar desain perahu. (2) memidahkan desain perahu ke skala penuh (3) membuat cetakan perahu (4) melaminasi perahu atau mampu menerapkan metode hand lay-up dengan baik dan tepat. Manfaat yang dapat diperoleh dengan keterampilan yang dimiliki peserta adalah mampu membuat sendiri perahu sehingga dapat menghemat biaya modal. Lebih dari itu, dapat membuka lapangan kerja yang bermuara pada peningkatan kesejahteraan pebudidaya.
Pelabuhan berperan penting dalam sistem transportasi maritim internasional dan logistik suatu negara karena apabila kinerja operasional pelabuhan tidak optimal seperti waktu tunggu sandar dan dwelling time yang masih lama, fasilitas terminal dan tenaga kerja bongkar muat kurang memadai dapat menghambat proses distribusi barang di pelabuhan. Terminal Petikemas Makassar sebagai bagian dari Pelabuhan Makassar merupakan pusat pelayaran kawasan Timur Indonesia yang didukung oleh hinterland Sulawesi Selatan yang potensial. Penelitian ini bertujuan untuk menjelaskan dan membuat model hubungan antara dwelling time dengan biaya logistik di Terminal Petikemas Makassar. Biaya logistik dalam penelitian ini adalah biaya tunggu modal dan container port charges yaitu biaya-biaya yang dikeluarkan dalam pengurusan peti kemas di Terminal Petikemas Makassar. Dwelling time adalah jarak waktu dari mulai suatu peti kemas dibongkar dan diangkat dari kapal sampai peti kemas tersebut meninggalkan terminal melalui pintu utama. Penelitian ini menggunakan metode regresi dengan menggunakan software GMDH Shell untuk pemodelan hubungan antara dwelling time dan biaya logistik. Komoditi ekspor dan impor terbesar dijadikan sampel dalam penelitian ini. Hasil penelitian ini menunjukkan tingkat korelasi, pengaruh dwelling time terhadap total biaya logistik baik untuk komoditi ekspor dan impor di Terminal Petikemas Makassar sebesar 100% dengan model hubungan TLC = 733400 + 211700 DT + P + 0,5006 BM untuk komoditi ekspor dan TLC = 733400 +119700 DT + P + 0,507 BM + GE untuk komoditi impor.
Sorong local port is one of the ports in Sorong City that provides services for pioneer ships, machine-sail ships, and fast passenger ship for tourists. Currently, mooring locations for the pioneer ships and machine-sail ships are nearby the mooring location of fast passenger ships. This condition affects the safety and amenities of passengers, mainly when the loading and unloading of cargoes and passengers take place at the same time. Besides, their ave not been proper supporting facilities such as passenger terminal, warehouse, and parking area. Therefore, this research aims to analyze the performance of existing facilities and the required capacity of supporting facilities for service improvement purposes. Some methods are being applied to assess the performance of berth (Berth Occupancy Ratio or BOR), passenger terminal, and warehouse (Shed Occupancy Ratio or SOR). The result shows that the ship calls grow by 13.33 % annually, where the highest number of visiting ships is the fast passenger ship (47.62%). Current BOR of Sorong local port can reach up to 77.88 %, which is higher than the standard BOR 70 %, while SOR of the warehouse is 20.98 %, which indicates that the utility of the warehouse is low. In the meantime, the required area for the passenger terminal is 617 m2.
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