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"A method, called spectral response surface method, is proposed for the study of the ringing phenomenon of offshore structures. Newman?s results for diffraction force on a column were reformulated in terms of the frequency components of the ocean surface and their Hilbert transforms. Using a first-order reliability method together with a dynamic model for the structural response, it is straightforward to calculate the ocean surface history most likely to generate an extreme ringing response and the ringing response history. "

"These proceedings gather a selection of refereed papers presented at the 1st Vietnam Symposium on Advances in Offshore Engineering (VSOE 2018), held on 1–3 November 2018 in Hanoi, Vietnam.The contributions from researchers, practitioners, policymakers, and entrepreneurs address technological and policy changes intended to promote renewable energies, and to generate business opportunities in oil and gas and offshore renewable energy. With a special focus on energy and geotechnics, the book brings together the latest lessons learned in offshore engineering, technological innovations, cost-effective and safer foundations and structural solutions, environmental protection, hazards, vulnerability, and risk management. The book offers a valuable resource for all graduate students, researchers and industrial practitioners working in the fields of offshore engineering and renewable energies."

"ABSTRAKPada situasi lingkungan usaha yang selalu berubah-ubah, peluang dan ancaman bagi perusahaan akan selalu timbul dan seringkali ancaman dan peluang timbul secara simultan. Bag I suatu perusahaan, peluang bisnis yang timbul tidak boleh dllewatkan begltu saja terutama jika peluang tersebut berkaitan erat dengan rencana investasi jangka panjang perusahaan dan strategi pengembangan perusahaan. Pemanfaatan suatu peluang bisnis tidak selalu berjalan dengan lancar, mengingat kendala-kendala maupun keterbatasan fasilitas penunjangnya.Karya akhir ini membahas bagaimana suatu perusahaan (PT. B) berusaha untuk meraih peluang bisnis yang memang berkaitan erat dengan strategi pengembangan perusahaan, namun sejalan dengan itu perusahaan menghadapi kendala keterbatasan dana Rupiah dari dunia perbankan nasional sebagai sumber dana investasi. Peluang bisnis yang ingin diraih oleh PT. B adalah investasi pada Industri Parquet Flooring, sebagai bagian dari pengembangan usaha perusahaan yang telah bergerak dalam bidang pengusahaan hutan.Untuk mengatasi kelangkaan dana nasional ini, PT. B mencoba untuk memanfaatkan alternatif sumber pendanaan lain, yaitu off shore loan. Kredit luar negeri yang menggunakan mata unang DM ini tentunya membutuhkan perlakuan pengelolaan yang berbeda dengan dana mata uang Rupiah. Perusahaan harus memiliki kemampuan agar dana mata uang Rupiah. Perusahaan harus memiliki kemampuan agar pinjaman dalam mata uang DM ini dapat dimanfaatkan secara optimal, karena Itu pengetahuan akan aspek Keuangan Internasional akan sangat penting."

"This book provides a brief overview of passive, semi-active and active control schemes to deal with vibration of offshore platforms. It then comprehensively and systematically discusses the recent advances in active systems with optimal, sliding model, delayed feedback and network-based control. Intended for readers interested in vibration control and ocean engineering, it is particularly useful for researchers, engineers, and graduate students in the fields of system and control community, vibration control, ocean engineering, as well as electrical and electronic engineering."

"Studi analisis ini merupakan suatu kegiatan untuk menganalisis dan menghitung kekuatan struktur bangunan dan besar beban ekternal dari lingkungan untuk menghindari terjadinya fatigue failure pada perencanaan dan perancangan Bangunan Offshore Aquaculture agar mendapatkan hasil yang optimal serta bangunan dapat bertahan dalam kurun waktu lifetime design. Guna mencapai tujuan yang dimaksud, harus dilakukan analisis terhadap pembebanan pada struktur Offshore Aquaculture sendiri, yaitu beban angin, beban arus, beban ombak dan gaya tegangan tali pada mooring yang diderita Offshore Aquaculture dalam keadaan kondisi di tempat operasional, sehingga dari nilai stress yang didapatkan dari hasil analisis secara numerik, akan didapatkan nilai Fatigue Life untuk keseluruhan struktur. Adapun hasil analisis ini menyatakan bahwa pada saat keadaan badai, gaya total yang bekerja pada struktur adalah 10508.16 kN, tegangan total mooring lines pada struktur yaitu 122.21 kN, dan kekuatan tegangan struktur yang didapatkan adalah sekitar 116.97 MPa. Hasil studi analisis ini sudah sesuai dengan standar sehingga mampu diterapkan di laut dalam Wilayah ZEE Pantai Barat Sumatra, Indonesia.

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This analysis study is an activity to analyze and calculate the strength of the building structure and the environment external load to avoid fatigue failure in planning and designing the Offshore Aquaculture Building. The analysis is being conducted to obtain optimal results, so the building can survive its lifetime design period. To achieve the intended purpose, an analysis of the loading of the Offshore Aquaculture structure such as the wind load, current load, wave load, and total tension of mooring lines afflicted in Offshore Aquaculture. This analysis shall be performed in the operational location, so that as the value of maximum stress is obtained from numerical analysis, Fatigue Life for the whole structure could be calculated. The results of this analysis indicate that during storm conditions, the total force acting on the structure is 10508.16 kN, the total tension of mooring lines in the structure is 122.21 kN, and the structural strength of the structure is approximately 116.97 MPa. The results of this analysis study are all according to the standards, so that it can be applied in the deep sea ZEE region of West Shore of Sumatra, Indonesia."

"Offshore operation facilities : equipment and procedures provides new engineers with the knowledge and methods that will assist them in maximizing efficiency while minimizing cost and helps them prepare for the many operational variables involved in offshore operations. This book clearly presents the working knowledge of subsea operations and demonstrates how to optimize operations offshore. The first half of the book covers the fundamental principles governing offshore engineering structural design, as well as drilling operations, procedures, and equipment. The second part includes common challenges of deep water oil and gas engineering as well as beach (shallow) oil engineering, submarine pipeline engineering, cable engineering, and safety system engineering. Many examples are included from various offshore locations, with special focus on offshore China operations. In the offshore petroleum engineering industry, the ability to maintain a profitable business depends on the efficiency and reliability of the structure, the equipment, and the engineer. "

"Umumnya pada proyek konstruksi industri migas di Indonesia dijalankan dengan model skema kontrak EPCI (Engineering, Procurement, Construction and Installation). Proyek konstruksi fasilitas migas lepas pantai merupakan proyek konstruksi yang kompleks sehingga fenomena perubahan tidak dapat dihindari. Perubahan dalam proyek diformalkan dalam change order. Change order pada proyek dapat memberikan dampak negatif berupa penambahan biaya yang membebani pemilik proyek. Penelitian ini membahas mengenai faktor penyebab terjadinya change order pada proyek EPCI pembangunan dan modifikasi fasilitas migas lepas pantai dari sudut pandang client. Survey kuisioner dilakukan kepada 44 responden yang merupakan tim manajemen proyek client yang berpengalaman dalam mengerjakan proyek konstruksi migas lepas pantai. Pada penelitian ini didapatkan bahwa faktor utama penyebab change order adalah: client meminta perubahan desain untuk mengakomodasi future development, client meminta perubahan desain untuk mengakomodasi perubahan karakteristik sumur, kesalahan dan ketidaksesuaian dokumen desain (FEED) milik client, pekerjaan tambah karena tidak tercantum pada FEED/kontrak dan client meminta perubahan spesifikasi.

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Commonly the oil and gas industry construction projects in Indonesia are run with the EPCI contract scheme (Engineering, Procurement, Construction and Installation). Offshore oil and gas facilities construction projects are complex construction projects so that the phenomenon of change cannot be avoided. Changes in the project were formalized in change order. Change orders on projects can have a negative impact in the form of cost overruns that burden the project owner. This study discusses the causes of change order in the EPCI project for the development and modification of offshore oil and gas facilities from the client`s perspective. A questionnaire survey was conducted on 44 respondents who are client project management teams who are experienced in working on offshore oil and gas construction projects. In this study it was found that the main factors causing change order are: Client requests a design change to accommodate future development, the Client requests a design change to accommodate changes in the characteristics of the well, client`s design document errors (FEED), added work because it is not listed in the FEED / the contract and client request a specification change."