Subject Code & Name: MV25405 – Marine Auxiliary Machines – I
Regulation: R-2025
Semester: IV (Fourth Semester)
Branch: B.E. Marine Engineering (Marine)
Credits / L-T-P: 3 Credits | L-T-P: 2-0-2
Course Objectives
- The course provides knowledge of marine auxiliary systems including piping, valves, air compressors, purifiers, and heat exchangers, with emphasis on their operation, performance, and troubleshooting.
Full Unit-wise Syllabus
Unit I – Engine Room Various Piping Arrangements
Piping arrangement of steam, fuel oil, lubricating oil cooling water, starting and service air systems, with fittings in the system. Pipeline materials and pipeline standards. Domestic fresh water and sea water hydrophore systems. Layout of machines in engine room. Location of stores and workshop, water tight doors, emergency escapes.
Practical: Identification and tracing of steam, fuel oil, lubricating oil, cooling water, and compressed air pipelines in engine room layout. Preparation and study of schematic piping diagrams for marine auxiliary systems.
Unit II – Valves, Cocks & Filters
Understand construction and basic maintenance of valves and cocks. Globe valves, gate valves, Butterfly valves, Non return valves, Quick closing valves and pressure reducing valves, Solenoid control spool valves, Remote operation for shutting down low sea and high sea suction valves. Construction & operation of Simplex & Duplex Filters, auto clean filters
Practical: Dismantling, assembly, and maintenance of globe valve and gate valve. Study and operation of quick closing valves and pressure reducing valves. Dismantling and operational study of simplex and duplex filters.
Unit III – Air Compressors
Design consideration, construction & operation of multistage reciprocating air compressors, rotary and screw air compressors, use of inter coolers and aftercoolers, emergency air compressor on ships, uses of compressed air, requirements of control air. Mountings of main and emergency air reservoirs, dehumidifiers, filters, pressure reducing valve.
Practical: Study and operation of multistage reciprocating air compressor.
Unit IV – Purifier and Clarifier
Principle of separation in gravity and centrifuge, purifier and clarifier operation, Factors affecting purification, selection of gravity disc, Basic components of purifier and clarifier, Working of purifier and clarifier, Operation problems and their remedies.
Practical: Demonstration and study of purifier operation and sludge discharge process. Dismantling, cleaning, and maintenance of purifier bowl assembly.
Unit V – Heat Exchangers
Construction & operation of Tubular Heat Exchangers, Plate type heat exchangers. Materials used in their construction. Expansion arrangement provided and their purpose. Maintenance works to be carried out. Fault finding and conditional assessment of heat exchangers.
Practical: Study and operation of shell and tube heat exchanger. Dismantling, cleaning, and maintenance of plate type heat exchanger. Fault diagnosis and performance assessment of marine heat exchangers.
Tasks: T1. A ship faces fuel leakage in piping system – analyze pipeline layout, valves, and suggest corrective measures. T2. An air compressor shows low pressure output – diagnose faults and improve performance. T3. A purifier fails to separate impurities effectively – evaluate operating conditions and suggest remedies. T4. A heat exchanger shows reduced heat transfer efficiency – identify fouling issues and recommend maintenance actions.
Course Outcomes (COs)
- CO1: Explain the construction, operation, and layout of marine auxiliary systems including piping systems, valves, compressors, purifiers, and heat exchangers.
- CO2: Apply the principles of marine auxiliary machinery in piping arrangements, compressed air systems, purification systems, and heat exchanger operations.
- CO3: Analyze the performance, operating conditions, faults, and maintenance requirements of marine auxiliary machines and systems.
- CO4: Evaluate troubleshooting methods, operational efficiency, and maintenance practices for reliable operation of marine auxiliary systems onboard ships.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment 50% | End Semester Examinations 50%
- Internal methodology: Written Test (40%), Practical (30%), Activity (30%). Practical: Lab Experiments (50%), Tasks (50%) (Each student must complete a minimum of two tasks). Activity: Review of GATE/ESE Questions (10%), Mini Project/ Quiz/ Assignment Programs/ Flipped Class /Seminar Presentation (20%)
Source: Official Anna University – B.E. Marine Engineering R-2025 Syllabus
Last Updated: October 2026
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