Prakosa, Muhammad Satrio Budi (2019) Konsep Desain Dynamic Positioning Kapal Tunda Untuk Operasional Di PT. Pertamina (Persero) Marine Region IV Cilacap. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kecelakaan terjadi pada operasi penundaan di PT. Pertamina (Persero) Marine Region IV Cilacap, yaitu kapal sandar menabrak dan merusak berthing dolphin karena lambatnya respons kapal tunda terhadap gaya lingkungan sekitar. Menanggapi hal tersebut, perlunya didapati teknologi yang memungkinkan respons kapal tunda meningkat terhadap gaya lingkungan yaitu dengan sistem DP (dynamic positioning). Penelitian diawali dengan pengambilan data di perusahaan terkait sebagai model dasar dari DP kapal tunda yang akan dirancang. Perancangan konsep desain DP kapal tunda dilakukan terhadap pemilihan model sistem propulsi dan sistem kontrol DP kapal tunda. Kemudian, dilakukan perancangan, simulasi, dan validasi model simulasi existing dengan perangkat lunak MATLAB sebagai model dasar pembuktian bahwa kapal tunda existing membutuhkan sistem DP. Setelah itu, trayektori kapal dan variabel gangguan dimasukkan pada sistem. Adapun dari keseluruhan hasil simulasi respons DP kapal tunda, didapati bahwa respons kapal tunda secara umum membutuhkan tiga spesifikasi utama, yaitu maximum overshoot 10.27%, time settling 14.1499 detik, dan error steady state 5% dari nilai stabil yang diharapkan. Adapun tipe penggerak yang lebih dapat memenuhi spesifikasi tersebut adalah tipe propulsi Voith Schneider Propeller (VSP) dibandingkan sistem propulsi pada model existing dan Azimuth Thruster. Begitu pula, dari hasil simulasi respons DP kapal tunda didapati bahwa rancangan DP kapal tunda dapat meningkatkan efektivitas dan keselamatan penundaan. Hal ini dibuktikan dengan hasil simulasi DP kapal tunda yang dapat mereduksi kecepatan kapal saat menabrak berthing dolphin hingga kecepatan 0.065371 m/s dari kecepatan saat menerima gangguan senilai 0.38995 m/s dan dengan kecepatan aman sandar kapal yang diperbolehkan saat menabrak berthing dolphin adalah senilai 0.09 m/s hingga 0.15 m/s.
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An accident happened in tug operation at PT. Pertamina (Persero) Marine Region IV Cilacap where the ship was hit and damaged a berthing dolphin which occurred due to slow response of tugs operation to the environmental disturbance. Responding to this accident, it is needed to find technology that allows the tugboat to have a faster response to the environmental forces which technology is DP (dynamic positioning) system. The first method of this research is collecting data from the related company and use it as the base model for the dynamic positioning tugboat arrangement. Then, the concept design of dynamic positioning tugboat is designed by arranging the propulsion system model and DP control system of a tugboat, and model simulation of the existing tugboat is arranged, simulated, and validated by MATLAB software to prove that in the case of achieving faster response to environmental force, DP tugboat is truly needed. After that, desired trajectory and disturbance variable are added to the simulation. From all the simulation results of the DP tugboat response, it was found that the tugboat response generally requires three main specifications, which are 10.27% maximum overshoot, 14.1499 seconds time settling, and 5% steady-state error of the expected stable value. The type of propulsion drive that can better meet these specifications is the Voith Schneider Propeller (VSP) compared to the propulsion drive in the existing model and Azimuth Thruster. It was also found that the concept design of DP tugboat could increase the effectiveness and safety of tug operation which approved by the result of the DP tugboat model simulation that DP tugboat could reduce ship velocity when bumping into the berthing dolphin down to 0.065371 m/s when receiving disturbance valued at 0.38995 m/s and where the allowed safe velocity was between 0.09 m/s and 0.15 m/s.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSSP 623.823 2 Pra k-1 2019 |
| Uncontrolled Keywords: | Control System, Dynamic Positioning, Tugboat, VSP. |
| Subjects: | V Naval Science > V Naval Science (General) |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Satrio Budi Prakosa |
| Date Deposited: | 26 Jun 2024 04:31 |
| Last Modified: | 26 Jun 2024 04:31 |
| URI: | http://repository.its.ac.id/id/eprint/69325 |
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