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All Journal International Journal of Renewable Energy Development TEKNIK KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Department of Naval Architecture Sinergi Jurnal Rekayasa Mesin JURNAL INTEGRASI Jurnal Rekayasa Hijau Warta Penelitian Perhubungan Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi JURNAL SAINS DAN TEKNOLOGI MARITIM Warta Penelitian Perhubungan

Eko Sasmito Hadi

Departemen Teknik Perkapalan Fakultas Teknik Universitas Diponegoro - Semarang

Author-ID : 272150

Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Transportation Other

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ANALISA ELECTRODE CONSUMABLE TYPE OK AUTROD 12.10 DENGAN PENGELASAN SUBMERGED ARC WELDING (SAW) PADA BLOCK KAPAL DCV 18500 DWT DI PT. JASA MARINA INDAH SEMARANG Kiryanto, Kiryanto; Sasmito Hadi, Eko
TEKNIK Volume 31, Nomor 2, Tahun 2010
Publisher : Diponegoro University

In this of globalization is growing very rapidly advancing technology. As well as in shipyard industry is toshipbuilding process. Submerged Arch Welding (SAW) is as joint methode of ship construction. Purpose ofresearch know number of electrodes wich requirement on block welding the ship DCV 18500 DWT in JasaMarina Indah Shipyard Semarang.The specimen experiment used is ST 42 low carbon steel. Variation of plates tickness is 12, 13, 14, 17, 19 and24 mm. Research step is carried out by making the specimen with variation thickness respectively. Specimendimensions length x width is 500 mm x 50 mm. The number of each specimen was made of three pieces. Thendo the measurement welding length, length and weight electrodes and slag welding.The analysis result of data welding on the specimen can be known number of electrode s and fluxs inSubmerged Arch Welding (SAW). The aplication of this research is the block DB 5(p/c/s), SS5A(p/s), SS5B(p/s), UD 5C, and TB 102 (p/c/s. Weight of consumable electrodes is 2185.31 kg (73 roll) and number offlux used wight is 2967.95 kg (119 bag).

PENGARUH PERUBAHAN KECEPATAN KAPAL TERHADAP LEVEL KETINGGIAN AIR PADA SISTEM PALKAN IKAN HIDUP DENGAN SISTEM NATURAL UNTUK KAPAL IKAN TRADISIONAL DI KABUPATEN REMBANG JAWA TENGAH Sasmito Hadi, Eko; Wilma A, Wilma A; Munardi, Robby; Al Fahsan, Al Fahsan
TEKNIK Volume 34, Nomor 1, Tahun 2013
Publisher : Diponegoro University

Development of conventional fish hold design to live fish hold design may provide an alternative solution to keepcosts of preservation of fish catches down. Live fish hold systems left the water in the hold with sea water tocirculate around by giving a hole at the base of the hatch. Rembang traditional fishing vessel has the basiccharacteristics of a flat bottom with a long form of the stern board and has a habit of leaning on the edge of theocean with a sloping surface.The research was carried out on several models of variations in the number of holes and diameter of holes.Water in the live fish hold with ship stationary state will have the same height with a draught of ship, but asincreases of speed of ship then the height of water in the hold will decrease.Based on the analysis and calculation of Computational Fluid Dynamics method results obtained show that theoptimum velocity of each model reaches 7 knots. Models with a variation of amount 4 holes with 2 inch diameterhole has an average altitude of the highest water level of 2.16 m at a speed of 7 knots.

PENGARUH PERUBAHAN KECEPATAN KAPAL TERHADAP TINGGI PERMUKAAN AIR DI SISTEM FLUIDA DI DALAM PALKA PADA KAPAL IKAN MUATAN HIDUP TIPE KATAMARAN DENGAN PENDEKATAN CFD Sasmito Hadi, Eko; Manik, Parlindungan; Iqbal, M.
TEKNIK Volume 32, Nomor 3, Tahun 2011
Publisher : Diponegoro University

The existence and the use of live fish hold system, can help fishermen to reduce the operating costs in fishpreservation 11.8%. The live fish hold system, which fish hold were given circulation hole so the water insideand outside the hatch is connected, there should be researched about the changes and differences in pressurethat happened when the ship moves.Initial condition where the ship is not moving, surface of water in the fish hold will be the same height with adraught of ship. When the ship began to move out, the pressure of fish hold will decrease along with increasingthe speed of the ship. This will caused a decrease of water surface elevation in fish hold.According the calculation and analysis we found on the speed of 12 knots the water surface elevation in hold ispositive with a value 0,3947 m on to 0,20 m diameter of hole circulation (before variation), 0,4515 m on to 0,15m diameter of hole circulation, 0,4656 m onto 0,25 m diameter of hole circulation, 0,4718 m on to 0,20 mdiameter of two pieces of hole cilculation and -0,9410 m for manual calculation with all variations.The optimum hole circulation was chossen at two pieces of diameter of 0,20 m because on the speed 12 knots,the water elevation is 0,4718 m. This value is the higest among the other variations of the cilculation hole

ANALISA TEKNIS DAN EKONOMIS PENGGUNAAN COREMAT UNTUK KONSTRUKSI FRP (FIBERGLASS REINFORCED PLASTIC) SANDWICH PADA BADAN KAPAL Manik, Parlindungan; Sasmito Hadi, Eko
TEKNIK Volume 30, Nomor 3, Tahun 2009
Publisher : Diponegoro University

Planning of ship construction is make its having good effectivity value and efficiency. Composite as materialalternative to changes of steel feedstock and wood has many applied named FRP (fiberglass reinforcedplastics) single skin. The weakness of this FRP was heavy construction and requires many production time.Therefore, will be checked comparison between single skin with sandwich constructions for shell.In this research, the way for making composite is hand lay up method with three various thickness of skinthere are : t, t/2, and t/4. To know strength comparison from the various skin of sandwich with single skin,must be test, consist of tensile test.. The result is analyzed then compared by BKI (Biro Klasifikasi Indonesia)rules for the fiberglass ship.Based on the result, indicates that optimization skin thickness of sandwich construction applies Corematwhich tensile strength it is equivalent with Single Skin at 2/3t and usage of Sandwich construction causes23,12 % lighter. In economic analyze, advantage from low weight is compensation of addition 23,12 % DWT.Material cost for Sandwich about 11,35% bigger than Single Skin construction.

DESAIN KAPAL IKAN DENGAN BENTUK LAMBUNG CATAMARAN YANG MENGGUNAKAN SISTEM PENGGERAK LAYAR AN MESIN UNTUK MUATAN IKAN HIDUP Manik, Parlindungan; Sasmito Hadi, Eko
TEKNIK Volume 31, Nomor 1, Tahun 2010
Publisher : Diponegoro University

The Application Of Catamaran Hullform For The Fishing Vessel accorded to the leakage of the monohullform. The existence and the using of the lively fish hold could help the fisherman to decrease theoperational cost for about 11,8% to keep the fishes. Therefore the application of sail objected to reduce thebiggest cost operation component that is the fuel consumption. Catamaranhullform design for lively fish holdtook one hullform which has the best performance. The performance aspects in this case are the hydrostatic,ship resistance, stability and seakeeping.The research about catamaran fishing vessel design for lively fishes using sail and machine as the ship moveris expected to give the information about the hullform that has a better performance than the commonlyhullform and it could be an alternative to improve the fishing vessel hullform into the modern one.Accorded to the calculation result and analysis are gained the result that showed at the velocity of 12 knotsfrom some length dimension variations of fish hold for the catamaran fishing vessel with lively fish hold,variation of length of 2,0 meters could reduced the biggest shipâ€™s resistance for about 3,99% between theother modification hullform and the shipâ€™s resistance of standard hullform. Otherwise, by the stability aspectof any variation condition, fish hold length dimension variation at 2,0 meters had a better stability thananother fish hold length dimension and catamaran fishing vessel which used the commonly fish hold. Theinstallation of sail at the fish hold length dimension at 2,0 meters could reduce the power operation for about48,42% better than fishing vessel that used the commonly fish hold.

Analysis of the Time Cost Trade-Off Method Application on Tug Boat 135 GT Repair Projects Owned by PT. Pelabuhan Indonesia II Santosa, Ari Wibawa Budi; Trimulyono, Andi; Firnandito, Anugrah; Subekti, Joko; Hadi, Eko Sasmito
TEKNIK Vol. 45, No. 1 (2024): May 2024
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v45i1.52415

In the project implementation process, there is still the possibility of delays, as in the case of the Tanjung Buyut I Tug Boat ship repair project - 206 135 GT calculations are needed to accelerate the project to determine the optimum time and cost. One method that can be used in accelerating projects / crashing projects is the Time Cost Trade-Off method. This method can be used to solve this problem by adding specific alternatives such as working hours, labor, and other things with the minimum additional cost. In this study, an alternative acceleration was carried out by adding manpower and working hours duration of 1 to 4 hours which would be applied to the Hull repair project for the Tug Boat Tanjung Buyut I-206 135 GT. Based on the results of the analysis that has been carried out on the work of the Hull section, which is included in the critical activity, it is obtained that the most optimum duration acceleration is the addition of working hours (overtime) for 3 hours and an additional workforce of 24 peoples which results in an acceleration of time of 17 days from the normal duration of 60 days to 43 days with a time efficiency of 28%, as well as a cost reduction of IDR 19,700,000 or around 3.34% compared to the normal duration fee of IDR 571,950,000 to IDR 552,250,000.

Co-Authors A.F. Zakki Abi Dimas Alfian, Abi Dimas Abner Herdian Permana Putra Achmad Kurniawan Adhi Paska, Adhi Aep Supirman Afdi Supriyonggo Nugroho Ahmad Azhar Ginting Ahmad Fauzan Zakki Ajib Wahab Purwanto Akhiruddin Akhiruddin Al Fahsan Al Fahsan Aldias Bahatmaka Alexius Bayu Setyoko Alif Fadhilah Amaytana Cindy Armela Andhi Kusuma Andhyka Cakrabuana Adhitama Andi Trimulyono Ari Wibawa Ari Wibawa B.S Ari Wibawa B.S Ari Wibawa Budi Santosa Ari Wibawa Budi Santosa Ari Wibawa Budi Santosa Ari Wibawa Budi Santosa Ari Wibawa Budi Santosa ST, MSi Arie Prasetyo Ario Nugroho Prihutomo Ario Restu Sratudaku Aulia Ramadhan Kopayona Azhabul Hayatul Fajar Azniatu Fihliya Berlian Arswendo Adietya Berlian Arswendo Adietya Brata Wahyu Setya Budi Brian Haksa Nova Burhannudin Senoaji Buyung Vidiarto Caesar, Agung Al Citra Robiatul Adawiyah Deddy Chrismianto Deddy Chrismianto Dedi Budi Purwanto Desto Pradika Putra Dicky Darmawan Dimas Maulana Agung Pambudi Dito Adi Prassyeta Dwi Satria Fajar Efriananda Sabta Rizki Eka Heriyanty Eka Mellyana Nur Anggraini Elvira Dwi Gustiarini Fachry Ramadhan Fajrul Falah Rosid Firdaus S.P Firnandito, Anugrah Frans Simanjuntak Ganang Adi Baskoro Ginanjar Baskoro Aji Giri Aditya Chandra J Good Rindo Hartono Yudo Hartono Yudo Haryadi, Ricky Tri Hendri Firman Hibob Faiz Firdaus Ibnu Fauzi Kenedy Ichsan Aditio Imam Pujo Mulyatno Imam Pujo Mulyatno Indradi Setiyanto Irvan Putera Samudera Jefri Harumbinang Josua Siagian Juwanto Juwanto K Kiryanto K. Kiryanto Karnoto . Khoirul Anam Khoirul Ramadhan Kiryanto Kiryanto Kiryanto Kiryanto Kiryanto Kiryanto Lily Muzdalifah Luthfi Maslul Muttaqim M. Aji Luhur P M. Iqbal Maharani, Heslina Fifani Malau, Karno R Mita Ardiana, Mita Moh Nurdin Septiantono R Mohammad Nasikin Muhamad Zulkifli Muhammad Abdul Aziz Mufti Muhammad Ansori Muhammad Iqbal Muhammad Iqbal Muhammad Luqman Hakim, Muhammad Luqman Muhammad Raditya Daniswara Muhammad Rayandra Lubis Muhammad Rynaldi Muhammad Sidiq Natanael Martian Dwi Sunarto Natanael Martian Dwi Sunarto Niko Aditya Kriswan Noprian Christy S Nugraha, Sandy Nurhali Nurhali Ocid Mursid Ojo Kurdi P. Boby Janurianto Parlindungan Manik Parlindungan Manik Parlindungan Manik Parlindungan Manik Parlindungan Manik Permana, Mohamad Fiqri Rachmat Assidiq Rais Yudanto Renggita Aan Rachmadani Restu Kuasa Reza Andrian Saputro Ridwan Rasoki Harahap Rifandi Aditya Ririh Sustiko Asih Rizka Azhari Yulistiawan Faruq Robby Munardi Roby Widiyanto Rolan Haris Ben Imanuel Purba, Rolan Haris Ben Imanuel Rosiana Dewi Saeful Huda Mursito Samuel Samuel Samuel Samuel Sarjito Jokosisworo Septaji Indrasahputra Siahaan, Batara Srijaya Ratu Subekti, Joko Tindaon, Aldy Sabat Tobing, Christabel Giovanny Toha Frans Soaloon Siregar Untung Budiarto Vina Widya Lestari Vita Agnindiyasari Wahif Indramana Wahyu Nugroho Mustikojati, Wahyu Nugroho Wasisto Haribowo, Wasisto Wicaksono, Ardhana Widyanto Widyanto Willma Amiruddin Wilma A Wilma A Wilma Amiruddin Wiranda, Ariiq Daffa Wiwit Wirawan Yohana Krisyanti Simanjuntak Zeinurrohman, Rangga Zippo Benediktus Sijabat

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