Abstractimpressed current cathodic protection (ICCP) is a method to protect metallic material such as ship hull from corrosion by using electric current. In this research, a prototype of thermoelectric generator is developed in order to supply the ICCP system. This thermoelectric generator is planned to utilize the exhaust gas from main engine of the ship. Method carried in this research is assembling the prototype of thermoelectric generator followed by conducted experiment to observe the potential energy of the prototype. After that, the required number of thermoelectric generator is calculated to supply the ICCP system to protect the ship from corrosion. The object in this research is live fish carrier "Wellboat" which has 396.08 m 2 wetted area. The required voltage and current to protect the ship from corrosion for three years are 16.67 Volt and 2.66 Ampere. Based on the experiment, a prototype of thermoelectric generator can generate 0.34 Ampere and 4.43 Volt, causing the need of 8 series and 4 parallels connection. It can be concluded that the corrosion rate on the ship hull can be decelerated by using impressed current cathodic protection method without needing additional cost or fuel consumption to produce electric energy.

The application of technology Hydraulic Power Pack Unit in the industry today's world is continues to increase. Not only in Industrial alone, but also in Marine, Onshore and Offshore field use these technologies. The growing demands for well servicing servicesoffshore Mahakam Delta region makes PT. Halliburton Indonesia as a Service Company increasing its fleet in the Production Enhancement (PE) Department. PE Department which has a fleet of Stimulation Vessel Type-Stim Star Borneo plan to improve the service unit of High Rate Water Pack (HRWP) with High Pressure Pump unit plus Gravel Pack Sand (GP) with High Rate Blender Unit. Blender High Rate This is a unit that is tubular mixing blender is driven by hydraulic power, motors, sand screw, pump suction and discharge pump installed as one unit. High Rate Blender function is to rotate and mix the sand, water and chemicals in the form of a gel called gravel pack which will be pumped by High Pressure Pump to the Well. Rate of Blender where this should be able to generate a rate or debit corresponding services required Delta Mahakam area.

Abstractin the process of fishing it takes some supplies such as fishing equipment, instrumentation and storage of fish. The traditional fishermen of their fishing days fishing usually only bring ice cubes. Solid plastic polyurethane foam is a mixture solution of polyols and isocyanates, commonly used as an insulating material storage. From the observation waste generated being sawmill sawdust per spindle with diameter of 30 cm and a length of 1 m with 5 times sawmill, Saws 0.8 cm thick produced 0.0088 m³ / burnable logs only discarded. Therefore takes thermal conductivity test to review mixture of sawdust and polyurethane comparison with variations different dosing. Maximum disposals sawdust can be done is 40% of the total volume of material mixture, polyurethane and sawdust because composite material (sawdust-polyurethane) can not be bond with good so easy slab separately from origin form. Thermal Conductivity insulating good and economical on disposals 40% wood flour (0.05252 W / m°C) and is able to maintain a 2 kg of ice crystals melt up perfect on 34 hours. Operating profits economical from 4,8 m³insulation composite application with obtained Rp 4.486.000 compared with 100% Polyurethane Insulation Manufacture.

During the long dry season hit most parts of East Java in 2019, there were 566 villages in 180 sub-districts that are categorized as dry areas with critical clean water supply, 236 villages in 93 sub-districts as rare dry areas, and 20 villages in 14 sub-districts experienced limited dryness. In big cities in Indonesia, clean water service coverage has only reached 64.3%, while in rural areas still at 69.4%. This proves that most of the regions in Indonesia still experiencing a clean water crisis. Therefore, alternative clean water processing technology is needed to help supply clean water in these areas. Desalination as one of the technologies is essential for coastal areas that are remote from freshwater resources. In this paper, authors propose a design of photovoltaic reverse osmosis (PVRO) desalination plant at remote coastal area to supply clean water. A 100 m3/day design of PVRO, which is compact and energy efficient including the ultrafiltration method is introduced.

⎯cruise ship is a ship used for recreational and entertainment purposes. As a means of vacation and entertainment, the design of this transportation requires more attention. The design of the ship itself must be able to make it comfortable for the passengers. One of them, to increase comfort for cruise ship passengers is by adding heating water to the domestic system. Will need a large amount of electrical energy if using an electric heater. While in the engine room there is exhaust heat that can be utilized. The purpose of this research is to plan the utilization of waste heat contained in the exhaust gas and cooling water system (high temperature) as a water heater on the domestic system. The method used is the analysis of calculations. From the results of the calculation analysis, it was found that the hot water requirements of this ship were 3409 liters/day and needed a heat 167.12 kJ/s to increase the water temperature from 25 o C to 66 o C. From the calculation results, the 50% load engine has a heat 469 kJ/s, 75% load engine has a heat 645 kJ/s, 80% load engine has a heat 729 kJ/s, 100% load engine has a heat 781 kJ/s, while in cooling water system (high temperature) has a heat 252 kJ/s. Tank insulation using glass wool with a thickness of 610 mm. While the insulation on the pipe uses glass wool with thickness 50 mm. By replacing the electric water heater by utilizing heat waste can minimize the cost up to Rp.245,211.833/day or Rp.7,356,355.008/month.