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Sudjasta, Bambang
Fakultas Teknik UPN "Veteran" Jakarta
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PERAHU NELAYAN MENGGUNAKAN JERIGEN PLASTIK BEKAS UNTUK MENINGKATKAN KESEJAHTERAAN NELAYAN Suranto, Purwo Joko; Sudjasta, Bambang
Bina Teknika Vol 14, No 2 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Perahu nelayan adalah suatu sarana yang dapat mengapung di air yang digunakan oleh para nelayan untuk mencari dan menangkap ikan di sungai maupun di laut. Perahu nelayan merupakan sarana yang paling penting bagi para nelayan untuk digunakan mencari dan menangkap ikan, tanpa adanya perahu maka nelayan tidak bisa mencari nafkah untuk keluarganya. Di Indonesia cukup banyak sekali masyarakat perkampungan nelayan, dikarenakan Indonesia merupakan negara kepulauan dimana setiap pulau dikelilingi oleh lautan. Mereka tersebar dan hidup bermukim di daerah-daerah pinggiran pantai atau pesisir pantai di seluruh wilayah kepulauan Indonesia. Mahalnya harga perahu nelayan, sehingga banyak nelayan yang tidak mempunyai perahu sendiri. Kebanyakan mereka bekerja pada juragan-juragan kapal sebagai buruh nelayan, dengan demikian penghasilan mereka tidak mencukupi untuk memenuhi kebutuhan keluarga. Dilain pihak banyak sekali jerigen-jerigen plastik bekas tempat minyak yang tidak dimanfaatkan sehingga bisa menjadi limbah, jerigen-jerigen plastik inilah yang akan dimanfaatkan untuk pembuatan perahu nelayan. Tentunya didesain dan dihitung kekuatan serta stabilitas dari perahu tersebut, sehingga terjamin keselamatan nelayan dalam mencari ikan di laut. Ukuran pokok Perahu yaitu Panjang Perahu Keseluruhan (Loa) = 3,80 m, Panjang Perahu antara Garis Tegak (Lpp) = 3,40 m, Sarat Perahu (T) = 0,400 m, Lebar Kapal (B) = 0,858 m, Kecepatan dirancang = 6 knot. Sesuai dengan besarnya kecepatan perahu 6 knot maka didapat Hambatan Perahu adalah 840,83 Newton (N) serta Besarnya Effektif Horse Power (EHP) perahu tersebut adalah 3,48 Horse Power (HP). Berdasarkan EHP yang didapat maka dapat dicari besarnya Break Horse Power (BHP) perahu tersebut, setelah melalui perhitungan berdasar dari EHP tadi maka didapatkan besarnya BHP mesin adalah  6,931 HP kemudian dicari mesin yang ada dipasaran didapat BHP mesin 7 HP. Besarnya muatan perahu dihitung sesuai displasemen perahu dimana Displasemen = DWT + LWT dimana unsur muatan terdapat pada DWT sehingga setalah melalui perhitungan maka didapat hasil muatan yang bisa diangkut oleh perahu tersebut sebesar 655,5 kg. Stabilitas perahu pada kondisi muatan kosong (Empty Load) sebagaimana maupun pada kondisi muatan penuh (Full Load) menunjukan bahwa stabilitas perahu nelayan tersebut sangat baik artinya apabila perahu oleng atau miring akibat ombak, angin atau muatan maka perahu tersebut dapat kembali keposisi tegak sehingga perahu tidak tenggelam, maka aman digunakan oleh nelayan.
ANALISIS KEBUTUHAN PEMASANGAN ZINK ANODE UNTUK MENCEGAH KOROSI PADA LAMBUNG KAPAL KAPAL GENERAL CARGO Sudjasta, Bambang; Suranto, Purwo Joko; Setiani, Hernia
Bina Teknika Vol 14, No 2 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Needs installation of cathodic protection to prevent corrosion of the ship in the sea water medium is a must so that the ships can be used as long as possible, but the effectiveness is very limited lifespan sacrificial anode that time should be right on time. For the replacement timing becomes important to do, hull plate is first exposed areas of sea water. In this area of the hull bottom water or top area of water exposed to corrosion range. Corrosion of hull plates can lead to decline in strength and service life of ships, reducing the ship's speed and reduce safety and security of cargo and passengers. From the calculation of the aluminum anode needs indicated that there is a difference between the life of the anode replacement is supposed to 5.25 years. The number of victims aluminum anode required to ship the object of the research is based on the calculation is 12 pieces (± 44.2 kg), lower than the number of anode installed in the field about 24 pieces (108 Kg). So the amount of victims aluminum anode mounted on General Cargo Ship in the field is redundant with past-year use of 5.25 while the turn is done for 3 years. For the owners of the ship, you should use zinc or magnesium anode victim since both of these materials have an efficiency of 95 % compared to aluminum, is only 50 %.
PENERAPAN PROSEDUR OPERASIONAL FLOATING DOCK 6000 TLC Sudjasta, Bambang
Bina Teknika Vol 12, No 1 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Floating dock is one of the places for the repair of ship. It is a building that float on the sea, and has the ability to raise the vessel with longitudinal or transverse slope sizeable. It is needed a stable balance during the docking operation. In the implementation of docking the vessel must pay attention to the security elements of material and personnel. Should be avoided for slope occurring and ensuring the security and safety of the ship docking process. The implementation should always follow established procedures. the implementation should always follow established procedures.
ANALISIS PENGUKURAN ULANG TONAGE KAPAL PENANGKAP IKAN DENGAN PANJANG KURANG DARI 24 METER Sudjasta, Bambang; Suranto, Purwo Joko; Putra, Chinatha Erwin Sandika
Bina Teknika Vol 14, No 1 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

This research was conducted to know the change of Gross Tonnage (GT) size of fishing vessels before and after re-measurements by measuring experts appointed according to the Ministerial Regulation of the Ministry of Transportation Year 2013 on Ship Measurement, as well as calculating the expected revision of Non-Tax State Revenue (PNBP). Data processing using SPSS program, one of which is paired sample T-test is a test that can compare data before and after data. Tests paired sample T-test has a requirement, that the data must be normally distributed, then the kolmogorov smirnov normality test to determine the normal distribution data or not. The result of kolmogorov sminov test concluded normal distributed data and can be tested paired sample T-test. From result of paired sample T-test is known comparison of data have real difference. Then the analysis of this research was done and resulted some conclusion that difference of GT increase equal to 73% before before measurement, PNBP assumed can accept new income equal to Rp. 3,458,304,- for port services, and navigation services Rp. 11.376.000,- if calculated one week ship only operate one time and for one year.
PELAYANAN KAPAL DAN BARANG DI PELABUHAN CILACAP Sudjasta, Bambang
Bina Teknika Vol 12, No 2 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

position is strategic to support marine transportation system, where westward the island of Sumatera, South Asia, and the Middle East, to the east is Nusatenggara, and until the Australian continent. Cilacap port has a support area (hinterland) potential, namely the southern part of Central Java, Yogyakarta and West Java southeast. Increased support the region's economy will lead to increased trade that will improve the flow of goods/ commodities and the number of ship visits in the port of Cilacap. The number of ship visits dominated by tankers, and commodities trading is dominated by fuel oil. This study aims to conduct a review of port services, especially services to ships and service of loading and unloading of goods that must be continuously improved quality and quantity.
DESAIN BIS AIR RAMAH LINGKUNGAN SEBAGAI SARANA TRANSPORTASI ALTERNATIF DI PROVINSI DKI JAKARTA Sudjasta, Bambang; Suranto, Purwo Joko
Bina Teknika Vol 13, No 2 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Flood Canal was built to reduce the impact of flood during the rainy season that is river catching / times that passes in The Special Areas of The Capital of Jakarta and can accommodate the flood from Depok and Bogor. The city government is also building a mass transportation mode in Jakarta that integrates railway lines, light rail transit, roads, busway and subway networks targeted for completion in 2017 and will be integrated with the outer ring train, but if the floods are partially paralyzed. For this reason, it is necessary to empower the Flood Canal function as an alternative transportation infrastructure that is environmentally friendly water bus with a capacity of 30 passengers that can operate even in flood condition. A number of preliminary studies of water buses of earlier models and concepts have been conducted to obtain a suitable and feasible prototype to operate in the flow of West and East Canal Floods. To obtain a good water bus size calculation based on comparison ratio, general arrangement design, hull form design with CAD, hydrostatic calculation, engine power estimate and determination of required energy, stability calculation. The goal is as an environmentally friendly alternative transportation mode, with the advantage of being able to operate even in flood situations. It is expected to change the customs of the community for the canal to be the front of the house instead of the back of the house.
TINJAUAN SISTEM CAISSON PADA PENYAMBUNGAN BLOK LAMBUNG KAPAL Sudjasta, Bambang
Bina Teknika Vol 12, No 1 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

To spur the development of the shipbuilding industry efficient and effective, then one will have to do is select the appropriate application of technology to existing conditions. Selection of the technology is closely related to the technical aspects in the field. National shipyards often get the order the construction of new ships with a capacity that exceeds the shipyard conditions. Based on limited means, but the implementation of the construction of ships should still be able to walk then attempted to carry out the connection of the hull below the water. With theadoption of block module, where assembly of the hull is divided into two parts, the module block bow and stern module block. Block modules separate hull is launched / lowered into the water, and then later made the connection in the water. As tools for splicing in the water system been caisson. Serves as a tool in connecting module block in the water then the caisson system must meet requirements such as: 1. The shape of the surface to be attached to the hull should have the same shape as the shape of the ship body. 2. Structure of the caisson to be strong enough. 3. The caissons must have stability and buoyancy are pretty good. In planning is the preparation before the second block of the module is launched into the waters, such as: 1. Determination of the number and dimensions of the hinge. 2. Determination of welding procedures. The process of implementing these connections include: 1. Control of the position of the module block such that the connections between the two. 2. Installation of the amplifier while. 2. Installation of the caisson continued process of welding the hull. 3. Examination of the results of the weld joint.
KARAKTERISTIK HIDRODINAMIK DESAIN LAMBUNG KAPAL DENGAN RISE OF FLOOR DAN TANPA RISE OF FLOOR PADA PERAIRAN DALAM DAN DANGKAL Sudjasta, Bambang; Sulistyawati, Wiwin
Bina Teknika Vol 13, No 1 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

In principle Manoeuvrability vessel is strongly influenced by the design of the hull, propulsion system and steering system. Some of these elements are directly give a significant effect on the hydrodynamic force and moment when the ship maneuver. Analysis of hydrodynamic aspects is a stage that is absolutely necessary in the design process of a ship, especially for ships operating in waters with varying depths. By the time the ship through the shallow waters can increase frictional resistance surge barriers and the vessel which resulted in a decrease in speed boats. The hull form with rise of floor and without the rise of floor by focusing on the analysis of the obstacles, the character of the ship motion and acceleration criteria in deep and shallow water conditions. In numerical calculations for shallow water conditions (shallow water) with a ratio of water depth and draft of the ships, h / d = 1.2 and deep water (deep water) with h / d = 20. Evaluation of the obstacles, the character motion and acceleration for heave, roll, pitch and yaw is done by combining numerical methods through Hullspeed and AQWA Ansys program. From this numerical calculation, it can be analyzed with the rise of the hull form floor and without a rise of floor optimum for deepwater and shallow.
PERENCANAAN BIAYA PRODUKSI KAPAL IKAN 30 GT FIBERGLASS DENGAN SISTEM PENDINGIN FISH HOLD Hatuwe, Rusdy; Marasabessy, Amir; Sudjasta, Bambang
Bina Teknika Vol 13, No 1 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Ministry of Maritime Affairs and Fisheries of the Republic of Indonesia in the development of national fishing fleet in an effort to improve the welfare of fishermen and supporting the domestic shipbuilding industry, will build 3000 fiber glass fishing vessels with gross tonnage various fiscal years 2016 to 2019, 2016, 1719 units have been built with a capacity of 3 GT , 5 GT. 10 GT, 20 GT and 30 GT. In planning the production costs (RAB) needs to be examined carefully because during the RAB production of fishing boats fiber glass made reference to the RAB that already exist, if the RAB is too big ship production becomes uneconomic and likely to occur abuse RAB production conversely if too little can affect the quality production ship. The research objective is to make the RAB production of fishing vessels 30 GT-type purse seine with the cooling system of fish hold where materials and equipment/supplies ship components are marine use with a price refers to the exchange rate of the rupiah, which is expected to guarantee the economic value and the quality of the production vessel, The method used in making the RAB is the survey unit price of materials and equipment/supplies components ship with a screw on the design drawings and technical specifications. Based on the results of the study, the cost of manufacture of molded fiber glass fishing boat 30 GT-type purse seine is Rp.278.225.000, - and the cost of ship production (services and material) of Rp.1.944.470.000, -
DISAIN KAPAL PENANGKAP IKAN 10 GT BERBAHAN FIBERGLASS UNTUK WILAYAH PERAIRAN KECAMATAN PANIMBANG KABUPATEN PANDEGLANG Sudjasta, Bambang; Djaya, Yuhani
Bina Teknika Vol 11, No 2 (2015): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

The potential of Indonesian marine fisheries resources magnitude of ± 6.6 million tons / year, but only some can be captured by Indonesian fishermen is ± 4.7 million tons / year, partly stolen by fishermen from neighboring countries. This is due to the limited number and large size of fishing vessels operating.One of the areas that have the potential for capture fisheries is Panimbang Pandeglang District of Banten Province. Subdistrict of Panimbang the coastal region directly opposite the Sunda Strait. This region has a coastline and marine areas large enough.In order to improve the ability of the fishermen in the subdistrict Panimbang, it is necessary to build a fishing vessel that is suitable for this region. Where the design and construction of fishing vessel can be realized, then in turn the welfare of the fishermen in the region will increase.Fishing vessel designed the planned use of materials / raw materials fiberglass. This is because due to the high cost of steel plate material, problems also trouble getting wood materials. The fishing vessel design includes determining the size of the subject, the manufacturing line drawings, preparation of general plans, construction design, stability diagram, engine power and tonnage.
Co-Authors Amir Marasabessy Budhi Martana Djaya, Yuhani Hatuwe, Rusdy Nur, Iswadi Putra, Chinatha Erwin Sandika Setiani, Hernia Sulistyawati, Wiwin Suranto, Purwo Joko