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Abstrak :
Pengurangan hambatan kapal sangat penting untuk mengurangi konsumsi bahan bakar. Hambatan-hambatan tersebut adalah hambatan gesek dan hambatan sisa, tetapi yang dominan dalam hambatan kapal merupakan hambatan gesek. Pengurangan hambatan kapal dapat dilakukan dengan menggunakan permukaan riblet. Struktur riblet yang paling umum ditemukan di alam adalah struktur riblet yang terputus-putus atau yang tersegmentasi (segmented riblet). Struktur riblet dengan perbedaan perbandingan tinggi dan jarak antar dinding (h/s ratio) menjadi fokus utama dalam penelitian ini. Dari hasil penelitian, struktur riblet mampu mengurangi hambatan total kapal hingga 14%.

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Drag reduction is the most crucial step in order to reduce the use of gas for ships. The ship?s resistances consist of frictional resistance and residual resistance, but in the first one is more dominant in most drag cases. This has caused many researchers to find a way to reduce frictional resistance and one of many ways to do so is by applying a grooved structured surface, mostly known as riblets. Riblets can reduce the shear stress that any object makes when moving in fluid. There are many types of riblets in nature but mostly these types are segmented grooved structures rather than continuous ones. Given that riblet surfaces consist of aligned structures like walls, thus the main focus of this research is to analyze the difference in drag reduction by a riblet surface on ship hull when the ratio of riblet`s walls height and their distance with each other is varied. The result shows that a riblet surfaced ship?s hull can reduce drag up to 14 percent.

Abstrak :
Pelayanan jasa kontenerisasi semakin menjanjikan seiring dengan berjalannya waktu. Setiap terminal peti kemas sudah seharusnya menggunakan rancangan sistem yang paling efektif dan menguntungkan walaupun dengan keterbatasan lahan maupun fasilitas yang dimiliki. Perancangan alur barang dan kendaraan yang baik sangat mempengaruhi kinerja kerja semua pihak yang terkait di bidang ini dimana tentu saja hal ini akan memicu produktivitas suatu terminal peti kemas. Alur barang dan kendaraan di terminal petikemas tidak boleh terganggu dengan jumlah kendaraan yang berlebihan karena hanya akan menyebabkan kemacetan di dalam terminal dan menbuat produktivitas barang terhenti. ...... Containerization seems to be promising from day to day. Each container terminal should use the most effective and beneficial system design even with its limited land and facilities. A good material flow, in this case container, and land transport’s route affects the working performance of all who are involved in the business. This can lead to an increased productivity. The material’s flow and land transport’s route must never encounter problem with the over capacity of the number of the transport itself which could lead to low productivity.