... green shipping smc 2022 ferry requirement apostolo papanikolaou operation houston double-ended ferry battery caese platform holiship engine SNAME Maritime Convention 2022 26-29 September, Houston, TX Copyright © 2022 Society of Naval Architects and Marine Engineers (SNAME) www.sname.org...

... of the ship's propeller. For the propeller, the diameter, the number of blades and the length of the drive shaft from the main engine position to the propeller are considered. Three engine power levels (low, medium and high) are selected, represented by 300, 850 and 1300 HP engines. The aforementioned operating...

... are procedurally designed with repetitive calculations, while marine power plants are designed by best practices and time-intensive trade-off studies. We developed a marine engineering design tool that aids with electrical system and power plant design, combining automation and optimization to minimize engineering...

... virtual event engine propane fuel vapor ambient temperature gaseous fuel darren monzingo propane-fueled ship smc 2020 tank emission SNAME Maritime Convention 2020 - A Virtual Event 29 September - 2 October Copyright © 2020 Society of Naval Architects and Marine Engineers (SNAME) www.sname.org...

... are determined upon which performance curves for a particular vessel can be based. The method was used to determine performance curves for fuel consumption, engine performance, and range. Inference of maximum range and optimal speeds were determined using simple trend-line fits to this data. marine...

... traditional interactive program applications ("apps") into three separately developed and tested objects: calculation engine (CE) batch programs, open source and industry standard (XML) data files, and open source user interface frameworks (UIF) that work with any CE without programming. A working prototype...

... an early design that learns from issues that the U.S. Navy's current Littoral Combat Ship designs have encountered. ship personal communication communication accommodation engine klesaris adaptable design goodman design spiral colen kennell turbine vehicle knot bulkhead module...

... characterization factor impact assessment assessment operation system simulation efficiency engine system design environmental impact energy conservation air emission environmental performance life cycle assessment cammann simulation-based lcpa performance assessment reduction maneuvering...

... the life-cycle cost evaluation. This paper discusses the functional requirements and cost saving advantages of the optimization of hull lines, optimization of propulsion plant, and stabilizer fin selection. main engine fuel consumption life-cycle cost us government trv hull propulsion fuel...

... of such tests and trials. Tests are often carried without any load cells measuring the shaft power to ascertain the BHP. Simply, engine rpm/rating is used to fix the 100% MCR which often in the range of 105–108% MCR. Some of the parties involved in certifying the correct bollard pull tests do not even...

... which limit the amount of sulfur in fuel oil, limit the amount of nitrogen oxides emitted from the engine combustion process, and reduce CO2 emissions from the combustion of fossil fuels. The economics of alternative fuels such as liquefied natural gas (LNG) and low sulfur fuels and the imperatives...

.... The engines will be some of the first to meet the new EPA Tier 4 emissions standards. This paper follows the design process, from an initial fleet analysis, which included development of a concept design of the vessel among other options, through model testing and completed contract design. sif...

... This paper presents the results obtained from the combustion of emulsified fuel in marine diesel engines which are installed with electronic governor, on-line performance measurement and auto-tuning features. The limiting effects of increased fuel governor index due to the increased emulsion...

... to operate at 15 to 50% of the installed power in calm to moderate sea conditions. When engines operate at low power, fuel consumption per kWh produced power increases slightly, while the emissions of exhaust gases increase rapidly due to incomplete combustion. This study investigates flexible hybrid power...

... CALC engine and one GUI can be created to launch several CALC engines in sequence. The GUI of choice is a spreadsheet due to its availability, programmable customization, powerful analysis tools, cross-platform capability, and open code environment. programming language artificial intelligence...

... on ship owners and managers the use of new technologies which affect the day by day running of the vessel, starting with the choice of fuel, through changes in the engine operational parameters, and culminating in a severe reduction in allowable exhaust emissions. These changes combined with a volatile...

... The Environmental Protection Agency (EPA) national security exemption (NSE) status can be applied to new and existing U.S. flagged vessels having a national defense mission and meeting associated criteria. Benefits of installing noncompliant marine engines on NSE vessels may include preserving...

... Emulsified fuel technology has been developed since the early 1980’s to the improve combustion efficiency of marine diesel engines by creating a secondary atomization effect after the initial fuel injection. The main challenge is to measure the improved sfoc of ships accurately and reliably...

... monitoring, data gathering, reliability analysis and decision support. As part of the above, a case study on the machinery monitoring will be presented in this paper. The analysis involves ship’s main engine, lubrication and starting sub-systems and various components and failure modes. The case study...

... The Navy pilot program investigated cost-effective technologies to reduce emissions from legacy marine engines. High-speed, high-population engine models in both commercial and Navy fleets were targeted. Emission reductions were sought that would minimize fuel penalty as well as installation...