Fakultas Teknik dan Ilmu Kelautan

Performance of The Zinc Anode Shape Design Installation on The Seabus ALU-01 Fastship

Wed, 05 Nov 2014 00:00:00 GMT

Performance of The Zinc Anode Shape Design Installation on The Seabus ALU-01 Fastship Utomo, Neny Praharsiwi; Munazid, Ali; Suwasono, Bagiyo

Method for Estimating Cost of New Ship Building with Linear Regression

Fri, 04 Feb 2022 00:00:00 GMT

Method for Estimating Cost of New Ship Building with Linear Regression Azhar, Ali; Kristiyono, Tri Agung The request of a fleet of marine transportation can be fulfilled by constructing new vessels and purchasing secondhand vessels. The current constraints in building new vessels are cost relatively expensive and take a long time, while the advantages for the procurement of vessels of secondhand time relatif faster and the price is cheaper. New shipbuilding includes complex work with the multy year’s payment system, so it is important to develop the cost budget needed to build a new ship. The price should be adjusted concerning material needs and services with the standard market price during the completion time of the work and expected the calculation of the construction of a ship can be updated periodically. The research aims to identify, analyse and construct the cost estimation of the construction of the ferry types: 300 GT, 500 GT, 600 GT, 750 GT and its components. The stages that will be carried out in this study are to identify primary and secondary data relating to the construction costs of ferries and their components with field surveys, market surveys, and relevant library studies. Data is processed by linear regression methods to construct an estimate of the cost of building ferries and their components. Results obtained in the form of graphs and equivalencies of the cost of building ferries and material cost components, labour costs, and shipyard and third party cost

THE INFLUENCE OF EYE STALK ABLATION TO GONADAL MATURITY OF MUD CRAB SCYLLA SERRATA THAT CULTIVATED ON BATTERY CELL CAGE

Wed, 01 Jan 2014 00:00:00 GMT

THE INFLUENCE OF EYE STALK ABLATION TO GONADAL MATURITY OF MUD CRAB SCYLLA SERRATA THAT CULTIVATED ON BATTERY CELL CAGE Wijaya, Nirmalasari Idha; Triyanto The aim of the research is to know the level of Gonadal Maturity (GM) female crab with eye ablation technique. The research was executed at ponds of Semanting Village, in Derawan Island District, Berau Regency, East Kalimantan Province. The animal tests was female mud crab (Scylla serrata) genitals mature which had early body carapace width ranging 90-120 mm, undeveloped ovary (immature) but had done copulation. The experimental design utilizerandomized block design. treatment was done ablation of 100% right eye stalk (treat A), ablation of 50% right eye stalk (treat B), and without ablation (treat C), with three replications, were applied. These were grown for two weeks maintained on battery cell cage. The results of the study, showed that to reach the gonad maturity level IV or perfectly mature, the parent crab treated eye stalk ablation 100% (A) shows the percentage achieved relatively higher, reaching 66,7% compared to the parent crab treated with ablation of 50% (B) which only reached 53,3%. However, statistical tests both treatments showed no significant difference (P> 0,05). While the parent crab ablation untreated (control), indicating the percentage achievement of gonad maturity level is lower than the parent crab treated with ablation of only 23,3%. In the only treatment A statistical test that showed significant differences with the control (P <0,05), while treatment B showed no significant difference with control (P> 0,05). Other parameters observed in this research is the gonad maturation index and survival rate, which shows the result of three treatments statistically was not real different (P>0,05). The value of water quality measurements include temperature, pH, dissolved oxygen and salinity during the research is still optimal for the maintenance of mud crab. The concluded of the research was the treatment of eyestalk ablation effective accelarated gonadal mature..

Utilization of Bamboo Laminated for Wooden Ship's Construction

Tue, 01 Nov 2011 00:00:00 GMT

Utilization of Bamboo Laminated for Wooden Ship's Construction Widodo, Akhmad Basuki

Supply chain performance analysis on modular construction shipbuilding

Wed, 01 Jan 2020 00:00:00 GMT

Supply chain performance analysis on modular construction shipbuilding Baroroh, Intan; Ariana, I.M.; Dinariyana, A.A.B. Content from this work may be used under the terms of theCreative Commons Attribution 3.0 licence. Any further distributionof this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.Published under licence by IOP Publishing LtdMaritime Safety International ConferenceIOP Conf. Series: Earth and Environmental Science557 (2020) 012048IOP Publishingdoi:10.1088/1755-1315/557/1/0120481Supply chain performance analysis on modular construction shipbuildingIBaroroh1,a,*,I MAriana1,b, and AAB Dinariyana1,2,c1Departmentof Marine Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia2Center of Excellence in Maritime Safety and Marine Installation (PUI KEKAL), ITS Surabaya , Indonesiaa.intan.baroroh@hangtuah.ac.id, b.ariana@its.ac.id, c.kojex@its.ac.idAbstract. The Implementation of modular construction shipbuilding aims to accelerate ship production so that delivery time can be shortened. However, in its implementation, delay for completing and delivery the ship can still be found. The delay in delivery is influenced by the supply chain performance of the shipyard due to delays in design, material, and financial payments. This delay occurred due to the large number of sub-module and module construction works carried out in parallel. The works include hull construction, painting, outfitting and installation of equipments.This study aims to analyze the performance of the supply chain in shipyard that implementing modular construction system. In the initial stage, the study is conducted by defining the factors and parameters that affect supply chain performance in shipbuilding and determining factors that have the potential to cause delivery delays. The conceptual and technical approach is carried out by analyzing the causal relationship of the factors that have identified in the previous stage. Dominant factors that cause delays that occur in ship building are expected to find and observe using system dynamics approach.Keywords: Supply chain performance, Modular construction, System dynamic.

The Fortication of Iodine in Salt Consumption Using Manual Gun Spray

Mon, 01 Jan 2018 00:00:00 GMT

The Fortication of Iodine in Salt Consumption Using Manual Gun Spray Baroroh, Intan; Suwasono, Bagiyo; Hardianto, Didik The Blue Economy concept begins with Artemia salt farming. The salt farming industry is one of the pillars supporting the economic of coastal community. However, in the market, most of salt consumed have iodine level that is less than 30 ppm. Therefore, it is necessary to measure the supply of iodized salt from the market to reach 30 - 80 ppm iodium according to Indonesia National Standard because it can impact our health. Thus, it was necessary to repair the iodized salt production equipment through an iodine spray device on the machine. The result of spray setting modification technology on macro ranged from 38 - 45 ppm which fulfilled Indonesia National Standard

The Combination Process between Disc-Mill and Distillation Evaporation in Producing Salt Diversification Products

Sun, 01 Jan 2017 00:00:00 GMT

The Combination Process between Disc-Mill and Distillation Evaporation in Producing Salt Diversification Products Baroroh, Intan; Suwasono, Bagiyo; Munazid, Ali Abstract. Blue Economy concept began with the farming of Artemia salt. The industry of farmer’s salt was one of the pillars that supported the economy of coastal communities. At present, the perspectives of the public on an industrial salt production is less profitable and conducted by unskilled laborers. Nowadays, the farmer still use the evaporation total method of sea water by solar power, where the NaCl was ≤ 90% and residual brine. It is necessary to improve the salt production through combination between disc-mill and distillation evaporation technology to produce salt diversification product. The result of the combination process were refined salt with NaCl that was ≥ 90%, liquid salt with NaCl that was ± 60% and mineral water.

Method for Estimating Price of Second hand Ship with Multi Method

Wed, 17 Feb 2021 00:00:00 GMT

Method for Estimating Price of Second hand Ship with Multi Method Azhar, Ali Demand fleet as a means of marine transport could be met by building new ships and buying second-hand vessels. The current constraints in building a new ship are the cost relatively expensive and take a long time, while the profit for the procurement of second hand ships time relative faster and cheaper price. This study aimed to identify the price of second hand vessels and to develop a cost estimation model second hand vessels. Collecting data with survey vessel prices do with field surveys and market surveys via the internet on websites selling used shipbroker. Data survey include the price, type of vessel, the main dimension, tonnage, machines, materials and speed. Multi-methods data processing and analysis consisting of market price approach, comparative vessel and physical pricing approach. Estimated price or appraisal vessel obtained from the average value of the three methods.

EVALUATION OF ZONATION OF THE MANGROVE CONSERVATION AREAS (MCA) IN PAMURBAYA

Thu, 21 Jul 2016 00:00:00 GMT

EVALUATION OF ZONATION OF THE MANGROVE CONSERVATION AREAS (MCA) IN PAMURBAYA Prasita, Viv Djanat This study was conducted to evaluate the zonation of MCA in Pamurbaya. The methods are field survey, GIS methods using satellite imagery in 2012, 2014, and 2015. The results showed that the zoning of MCA has no less effective. It can be seen from the conditions, ie.: the buffer zones have been partly used for settlements (+ 13.35 Ha) and the core zone has been used for ponds (+ 462.30 Ha). The areas of ponds in the core zone were reduced by 18.39 ha in 2012 to 2014 but increased by 4.09 ha in 2014 to 2015.

ISOLATION OF SAPONIN COMPOUND FROM METHANOL EXTRACT OF THE MANGROVE Avicennia marina LEAVES AND ANTI OXIDANT BIOACTIVITY

Wed, 01 Jan 2014 00:00:00 GMT

ISOLATION OF SAPONIN COMPOUND FROM METHANOL EXTRACT OF THE MANGROVE Avicennia marina LEAVES AND ANTI OXIDANT BIOACTIVITY Mahmiah; TRISYANI, NINIS; Giman

CFD Analysis into the Correlation between Resistance and Seakeeping of Trimaran Configuration

Tue, 17 Jul 2018 00:00:00 GMT

CFD Analysis into the Correlation between Resistance and Seakeeping of Trimaran Configuration Luhulima, Richard Benny; Utama, IKAP; Sutiyo, Sutiyo; Suwasono, Bagiyo The development of marine transportation is growing rapidly to fulfil human needs. Furthermore, the use of trimaran vessels desperately needs to be developed to transport human and goods. The use of trimaran is very advantageous because it has large deck area compared to monohull with similar displacement. The calculation of trimaran vessel resistance with variations in the distance of the main hull and side hull transversely using Computational Fluid Dynamic approach was carried out. Then, seakeeping analysis is done to obtain the ship motion. Both resistance and seakeeping calculations were analyzed for resistance and seakeeping correlation. The results of numerical studies indicate that there is unique interference resistance in trimaran hull to transverse distance between hulls. The smaller distance between trimaran hulls, the greater resistance caused by interference of the constraints components that occur. Then, the apparent correlation between resistance and seakeeping is the increasing interference that causes heave and pitch motion to decrease. Interference does not affect roll motion. The numerical analysis shows that at a distance between hulls transversely 0.4 shows excellent results for the performance of resistance and seakeeping.

WAKE TURBULENCE AND DIMENSIONAL LENGTH CHANGES INFLUENCE ON CONVENTIONAL SHIP BASED ON RESISTANCE CRITERIA

Mon, 13 Aug 2018 00:00:00 GMT

WAKE TURBULENCE AND DIMENSIONAL LENGTH CHANGES INFLUENCE ON CONVENTIONAL SHIP BASED ON RESISTANCE CRITERIA Suwasono, Bagiyo; Munazid, Ali; Poundra, GAP; Sutiyo, Sutiyo In the utilization as a floating vessel, ships shall always interact with the dynamic of the fluids in her surrounding environment. Through this interaction, some wake turbulence will be formed as the ship cruise along the water. On a conventional ship, length has become one of the factors which can create various numbers and forms of wake turbulence, this wake turbulence then believed can provides the positive Turbulence Kinetic Energy (TKE) that be able to enhance the ship acceleration or the negative one which creates more ship resistance. The investigation concerned on how the dimensional length changes of the conventional ship will affect the TKE through the wake turbulence analysis. The research carried out numerically with Ansys Fluent CFD code for the further turbulence impact analyzing and will only focus on ship performance based on the resistance criteria with ideal condition boundary layer which can be the research parameter. The overall results were compared with published data for validation purposes. The results are also believed to be useful for the development of the maritime industry

Perancangan Model Kapal Selam Dinamis Sebagai Sarana Observasi Bawah Air

Wed, 05 Dec 2007 00:00:00 GMT

Perancangan Model Kapal Selam Dinamis Sebagai Sarana Observasi Bawah Air Winarno, Arif; Munazid, Ali; Taufiqurrohman, Muhammad Seiring dengan kemajuan teknologi yang semakin canggih terutama dibidang elektronika, transfer data, robot, visualisasi, satelit dan lain-lain, memungkinkan sekali observasi untuk penelitian dilakukan dengan sebuah alat bantu yang dikontrol dari ruang kontrol. dengan kenyataan tersebut, perancangan model kapal selam dinamis tanpa awak yang dapat dikontrol sangat memungkinkan digunakan sebagai sarana observasi atau penelitian bawah air. penelitian diawali dengan melakukan mission requirement atau fisibility study , yaitu bagaimana proses observasi yang diemban oleh model kapal selam, bagaimana sistem yang dipakai, bagaimana kondisi yangg diobservasi. tahap selanjutnya adalah basic design yang meliputi concept design dan preliminary design, yaitu dengan melakukan perhitungan-perhitungan dan membuat desain linesplan, general arrangement dan sistem kontrol. Tahap terakhir adalah pembuatan model kapal selam dan uji coba. model kapal selam dinamis yang dimaksud memiliki ukuran panjang keseluruhan LOA= 1,49M; Lebar, B=0,16m; tinggi sarat T=0,14M, displasement=21,7Kg. Ukuran tersebut diperoleh dari perbandingan skala kapal selam KRI CAKRA. Selain itu model kapal selam tersebut dapat bergerak maju sambil melakukan proses penyelaman (diving) maupun pada saat muncul ke permukaan dengan kecepatan maju rata-rata selama proses diving dan surfacing adalah sbesar 0,557 m/s dan 0,621 m/s. sistem kontrol menggunakan gelombang AM.

DEVELOPMENT AND INVESTMENT PROFILE OF TRADITIONAL SHIPYARD SMALL MEDIUM ENTREPRENEURS (SME) IN EAST JAVA

Wed, 20 Aug 2008 00:00:00 GMT

DEVELOPMENT AND INVESTMENT PROFILE OF TRADITIONAL SHIPYARD SMALL MEDIUM ENTREPRENEURS (SME) IN EAST JAVA Azhar, Ali This research aims at identifying investment and development profile of Small Medium Entrepreneurs (SME) of traditional shipyard in East Java. Data gathering was carried out by community survey study and public opinion survey of traditional shipyard SME at 4 regencies, i.e. Lamongan, Sidoarjo, Banyuwangi, and Trenggalek. Data is then processed and analyzed using Analytical Hierarchy Process (AHP) and Strength, Weakness, Opportunity, and Threat (SWOT) methods. The result from this research is investment profile of East Java traditional shipyard SME that includes: hereditary technology of ship construction and maintenance, simple infrastructure and tools, un-continue production, small capital, and limited human resources, however the challenge is still wide. SWOT analysis is done for the aspects of: entrepreneurship, production activities, management, organization, empowerment, and capital. The obtained alternative strategy for the development of traditional shipyard SME contains: short term strategy (ST), medium term strategy (WT, SO), and long term strategy (WO). Model developed from AHP for selecting alternative strategies of traditional shipyard SME has three levels (hierarchies), that is level 1 (goal), level 2 (criterion), and level 3 (alternative strategies).

Adaptive DOCR Coordination in Loop Electrical Distribution System With DG Using Artificial Neural Network LMBP

Thu, 22 Nov 2018 00:00:00 GMT

Adaptive DOCR Coordination in Loop Electrical Distribution System With DG Using Artificial Neural Network LMBP Abstract - To design the coordination protection for passive distribution system is not the tough work, while active or mesh distribution system which consists many distributed generators is quite more challenge for protection engineers. Additionally, the short circuit current will also vary if any DG in the system is offline, which causes to re-coordinate the relay protection in the system. To reset the relay protection, the engineers need more time. However In order to reduce the time of relay setting calculation, the adaptive protection coordination is proposed in this study by using artificial neural network. The study bases on the combinations of DGs’ state and the current short circuit levels as the input data and low setting of the directional overcurrent relays (DOCR) as the output data training. This research is conducted on modified IEEE 9-bus system equipped with distributed generators. After reaching convergence of Levenberg-Marquardt Back Propagation (LMBP) learning process, the results of weights and biases are compiled into the master controller to control all of the relays in the whole system. It will generate the relay setting automatically base on the results of ANN training. The results of this research have been testified in Etap simulation successfully and it is obvious that LMBP neural network is a robust method to model adaptive relay coordination system.

Identification of Antipathogenic Bacterial Coral Symbionts Against Porites Ulcerative White Spots Disease

Sun, 01 Jan 2017 00:00:00 GMT

Identification of Antipathogenic Bacterial Coral Symbionts Against Porites Ulcerative White Spots Disease Sa’adah, Nor; Sabdono, Agus; Wijayanti, Diah Permata

The Potential of Enceng Gondok (Eichhornia Craasipes) in Limboto Lake as the Renewable Energy in Traditional Fishing Ship

Sun, 01 Jan 2017 00:00:00 GMT

The Potential of Enceng Gondok (Eichhornia Craasipes) in Limboto Lake as the Renewable Energy in Traditional Fishing Ship Riyadi, Muhammad

Oceanography Data Processing Online Using Internet

Mon, 01 Jan 2018 00:00:00 GMT

Oceanography Data Processing Online Using Internet Suryadhi, Suryadhi; Kisnarti, Engki Andri

Characteristics of Tidal in Surabaya

Mon, 01 Jan 2018 00:00:00 GMT

Characteristics of Tidal in Surabaya Kisnarti, Engki Andri

ANALISA TAHANAN KAPAL PATROLI X MENGGUNAKAN METODE KOMPUTERISASI

Sat, 01 Jul 2017 00:00:00 GMT

ANALISA TAHANAN KAPAL PATROLI X MENGGUNAKAN METODE KOMPUTERISASI Sugianto, Erik

Determination of Shoreline Changes from 2002 to 2014 in The Mangrove Conservation Areas of Pamurbaya using GIS

Wed, 01 Jan 2014 00:00:00 GMT

Determination of Shoreline Changes from 2002 to 2014 in The Mangrove Conservation Areas of Pamurbaya using GIS Prasita, Viv Djanat

A Strategic of Labour Productivity to Support Shipyard Competitiveness in Partial Least Square (PLS) Path Analysis: PLS Algorithm and Bootstrapping

Thu, 01 Jan 2009 00:00:00 GMT

A Strategic of Labour Productivity to Support Shipyard Competitiveness in Partial Least Square (PLS) Path Analysis: PLS Algorithm and Bootstrapping Suwasono, Bagiyo; Widjadja, Sjarief; Zubaydi, Ahmad; Yuliadi, M. Zaed; Ratnasari, Vita

PERFORMANCE OF THE ZINC ANODE SHAPE DESIGN INSTALLATION ON THE SEABUS ALU-01 FASTSHIP

Wed, 01 Jan 2014 00:00:00 GMT

PERFORMANCE OF THE ZINC ANODE SHAPE DESIGN INSTALLATION ON THE SEABUS ALU-01 FASTSHIP Utomo, Neny Praharsiwi; Suwasono, Bagiyo; Munazid, Ali

THE FLUID FLOWING ANALYSIS OF RC HYDROPLANE WITH ANSYS 14.0

Wed, 01 Jan 2014 00:00:00 GMT

THE FLUID FLOWING ANALYSIS OF RC HYDROPLANE WITH ANSYS 14.0 Andicky, Eris; Suwasono, Bagiyo; Baroroh, Intan; Naval Architecture and Ship Building Engineering; Hang Tuah, Universitas; Gumelar, Agum

QUICK INSTALLATION PROCESS OF DESIGN STERN TUBE SYSTEM SHIPS

Wed, 01 Jan 2014 00:00:00 GMT

QUICK INSTALLATION PROCESS OF DESIGN STERN TUBE SYSTEM SHIPS Suwasono, Bagiyo; Darmadi Prodjosoewito, Bimo

Optimizing Trimaran Yacht Hull Configuration Based on Resistance and Seakeeping Criteria

Fri, 01 Jan 2016 00:00:00 GMT

Optimizing Trimaran Yacht Hull Configuration Based on Resistance and Seakeeping Criteria Poundra, Gde A. Prabhawatya; Suwasono, Bagiyo; Utama, I.K.A.P; Hardianto, D.

Outrigger RC Boat Model Hull Development As A High Speed Craft Based On Resistance and Lift Force

Fri, 01 Jan 2016 00:00:00 GMT

Outrigger RC Boat Model Hull Development As A High Speed Craft Based On Resistance and Lift Force Suwasono, Bagiyo; Munazid, Ali; Akbar, H.M.A.; Sahir, A.

HYDROPLANE DEVELOPMENT AS DIVING PLAN EQUIPMENT ON A SUBMARINE

Wed, 01 Jan 2014 00:00:00 GMT

HYDROPLANE DEVELOPMENT AS DIVING PLAN EQUIPMENT ON A SUBMARINE Poundra, Gde A. Prabhawatya; Suwasono, Bagiyo; Munazid, Ali; Agry Mohamad, Alfred; Naval Architecture and Ship Building Engineering; Hang Tuah, Universitas

THE APPLICATION OF GIS-AHP TO DEVELOP A STRATEGIC PLANNING FOR AN URBAN FARMING: FISHERY AND AQUACULTURE

Tue, 01 Jan 2013 00:00:00 GMT

THE APPLICATION OF GIS-AHP TO DEVELOP A STRATEGIC PLANNING FOR AN URBAN FARMING: FISHERY AND AQUACULTURE Suwasono, Bagiyo; Rosana, Nurul