Conference Agenda

MAST Med 2022 Grand Hyatt, Central Athens, Greece

Thu 3 Nov 2022

11:30 Thu 3 Nov 2022


3A: Surface

Naval Propulsion Developments I

Training/Design Challenges

Challenges of Teaching Control Engineering to Seafarers According to IMO – STCW 2010 Convention during the Mutated COVID – 19 Pandemic.

  • Prof. Ahmed Elkashlan
    professor of control
    Academy for Science and Technology

Mutated corona virus (COVID – 19) pandemic waves attack has significant impact in the maritime sector, and disrupted the smooth functioning of various teaching activities. Following precautionary extra – ordinary measures to limit the spread of infections, on – line implementation to the IMO- STCW 2010 convention was achieved to convey knowledge and proficiency regardless of lecturer’s, candidate’s, and instructor’s capabilities and experience in technological competencies as regard to readiness, accessibility, and platform.

The present work is practically based, that is containing enough theories to present adequate understanding of the conceptual relations and cognitive processes. The curricula is complaint with the mandatory minimum requirement for certification for electrical, electronic, and control engineering at the operational and management levels for both principles and practical knowledge for targeted engineering cadets. Barriers in implementing the complete requirements of the IMO- STCW 2010 online encompass: evaluating and assessment lecturer’s and cadet’s satisfaction level, insufficient teaching hours allocated, evaluating teaching syllabus and lecturer’s confidence, reaction and participation, poor or even limited direct communication between lecturers and cadets, difficulty adjusting learning style, technical difficulties faced by lecturers in online teaching and assessments. The confinement of the educational process to indoctrination, without dealing with the requirements for developing staff skills. Some suggestions to enhance and smooth the efficient online teaching includes updating the engineering programs for modern IT, effective information technology (IT) support, periodical training, educating the lecturers the new trends in information technology (IT), improving the infrastructure, financial support, hardware-software support, and continual evaluation of the learning outcomes to closely match the (STCW) 2010 requirements.

Evaluating the Effects of Engine Parameters on a HSDI Diesel Engine Combustion Noise Components: Development and Application of a Computational Methodology

  • Dr. Theodoros Zannis
    Associate Professor
    Hellenic Naval Academy

It is well known the importance of engine noise in the detection of naval warships and submarines from hostile units. Diesel engine is used a main propulsion engine and as an electric generator in the majority of naval warships and is also used as prime mover in conventional submarines and among other engine noise components, the most important diesel engine noise component is the one attributed to the in-cylinder phenomena and fuel combustion. Hence, acknowledging the importance of diesel engine combustion noise, in the present study a computational methodology was developed in MATLAB software for analyzing in-cylinder pressure profile and for calculating diesel engine combustion noise components and overall diesel engine combustion noise. The methodology is based on the analysis of engine noise signal as derived from measured or predicted cylinder pressure data to pseudo-motored signal, combustion signal and resonance signal and the employment of these three signals for the calculation of the overall combustion noise in db(A). The developed methodology was implemented in a high-speed direction injection (HSDI) diesel engine to examine the effect of engine speed, engine load, fuel consumption, injection timing, injection pressure and compression ratio on combustion-induced noise signals, overall combustion noise and on engine power output and specific fuel consumption. The theoretical results showed that the variation of any engine parameter for reducing diesel engine combustion noise and thus, to downplay its acoustic signature is accompanied by penalties in diesel engine energy efficiency and specific fuel consumption.

Sinking of WWI Armored Cruiser USS San Diego (Reconstruction)

  • Dr. Alexis Catsambis
    U.S. Navy
    United States

The U.S. Naval History and Heritage Command (NHHC), the University of Delaware (UD), the Naval Surface Warfare Center Carderock Division (NSWCC), the Office of Naval Intelligence (ONI), and the U.S. Naval Academy (USNA) partnered to conduct a remote sensing documentation survey of World War I-era armored cruiser USS San Diego. The survey obtained remote sensing data that, together with archival research and diver-based assessments, were utilized to better understand the wreck site's present condition, reconstruct though simulation the circumstances of the vessel’s loss, and commemorate the centennial of the vessel’s sinking. The multi-year effort illuminated the German U-boat threat off the Atlantic coast of the United States during World War I, as well as the reasons why a 150 m-long vessel capsized and sank in a matter of minutes following a single explosion that impacted its hull on a calm but fateful morning in July 1918.

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