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B.SC. ENGINEERING LEVEL 4 (Semester 2)

DEPARTMENT OF MECHANICAL ENGINEERING

Course Unit Code : ME 419 Title : Marine Engineering & Naval Architecture

Number of Credits : 3 Hours per week : Lectures 2.5 Tutorials 1/2 Practical 2/2

Pre-requisites : None

LEARNING OBJECTIVE

To acquire an understanding of the basic concepts in Marine Machinery and Ship Configuration

and analysis

LEARNING OUTCOMES

A student should be able to demonstrate a sound knowledge and understanding of

Working and operational principles of Marine engines, Propulsion Systems and Auxiliary

Machines.

Identification and representation of ships geometry. Calculation Hydrostatics Particulars and stability of a ship for a given loading condition.

Approximate estimation of ships resistance and propulsion power.

SCHEME OF ASSESSMENT

Final Examination-70%A written examination for which 70% of the total marks are allocated

Continuous Assessment-30%

02 written exercises one hour each for which 20% of the total marks are allocated04 course-works for which 10% of the total marks are allocated

SYLLABUS

Part A Mari ne Engineer ing

1. Introduction to Marine Auxiliaries 1 hour

List the machinery and equipment other than Main Propulsion unit mounted on a ship.

2. Pumps and Pumping Systems 2 hours

Explain the working procedure of centrifugal pumps.(single stage /multistage/vertical/horizontal/high pressure/high capacity type pumps).

Difference between gear and screw type pumps.

3. Distilled water plants 2 hours

Define the processes : Evaporation/Boiling evaporation/ Flash evaporation

Describe the operating procedure of a Low pressure, heat recovery fresh water generator.

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4. Heat Exchangers 1 hour

State the theoretical and constructional variations of Heater / cooler / condenser / boiler /

evaporator

Describe a shell and tube type heat exchanger.

5. Propellers & Stern tubes 2 hours

Distinguish the constructional differences of type of propellers Solid pitch / Built-in /

controllable)

Discuss the ships transmission line.

Know the construction of stern tubes (oil/water lubricated)

6. Steering Gear Systems 3 hours

Discuss in detail how a non follow system varies from a follow up type

system.

Explain a four ram electro-hydraulic type steering gear system Describe a Hele-shaw pump.

7. Ships air conditioners & Refrigerators 3 hours

Explain the Vapour Compression cycle of refrigeration.

Describe a Three-room temperature refrigeration system.

Explain a single duct air conditioning system.

Describe a twin duct air conditioning system

8. Marine Diesel Engines 5 hours

Introduction

Type of Marine Diesel Engines

Starting air system

High/Medium/Slow speed Engines

Maneouvring of an Engine

Part B - Naval Ar chitecture

1. Classification of Ship types 1 hour

Cargo ships - General cargo ships, Ro-Ro- Cargo Ships, Bulk Carriers, Liquid Carriers,

Gas Carriers, Container Carriers, Car Carriers, etc.

Passenger ships Pure Passenger ships, Cargo cum Passenger ships, o-Ro Passenger

Ships, Passenger Ferries

Fishing Vessels- Fishing Trawlers, Multi day fishing boats, Day Boats

Research Vessels

War Sips

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2. Main Dimensional Specifications 2 hours

Define

Perpendiculars, Baseline, Summer Load Waterline, Length Between Perpendiculars,

Length Overall, Length of Waterline, Moulded Beam, Depth and Draft, Freeboard,

Freeboard deck, Chamber, Sheer, Stem, Stern, Bulbous bow, Keel etc with appropriatediagrams

Identify

Principal bulkheads, Keel plate, Tank Top, Double bottom, Weather Deck, IntermediateDeck, Aft peak Tank, Fore Peak Tank, Double bottom Tanks, Cargo holds, Poop deck,

Forecastle Deck, Superstructure etc.

3. Hullform and Representation 2 hours

Lines Plan of a ship -Stations, Waterlines, Profile Plan, Offsets, Body Plan, Waterline

Plan, Buttock Planes, Parallel Middle body.

Developing Lines- Straight frame lines, Methodical Lines and Use of Computer in linedefinitions.

4. Coefficient of Forms 2 hour

Definitions of block coefficient, Waterplane area coefficient, Midship area coefficient,

Prismatic coefficient with appropriate sketches

Estimations of above coefficients for given dimensions

5. Hydrostatics Particulars 2 hours

Definitions of vertical and longitudinal center of buoyancy (KB and LCB), Centre of

floatation (LCF), Tonnes Per Centimeter immersion (TPC) , Metacentre andmetacentric height (BM and KM)

Derive expression for KB, BM, and KM of a rectangular barge, Variation between draft

and metacentre, minimum metacentric height.

6. Estimation of hydrostatic particulars 4 hours

Method of integration of ships lines- Trapezoidal rule, Simpsons First, Second andThird rules, Techbycheff rule

Use of Simpsons rules to estimate

1. Waterplane area, centre of flotation2. Displacement and KB using waterplane areas

3. Displacement and LCB using cross-sectional areas4. Second moment of area of waterplanes and BM calculations

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7. Initial Stability of Ships 3 hours

Initial Stability Theory of ships and its limitation, Stable, Unstable and Neutral

Equilibrium conditions.

Theory on effect of shifting, loading and unloading of a small weight transversely andinclination of the ship due to movement of centre of gravity

Effect of suspended weight to the centre of gravity and stability of the ship.

8. Introduction to Ship Resistance and Propulsion 4 hours

Frictional Resistance and Residual Resistance

Model test and calculation of effective power

Engine selection and power transmission.

RECOMMENDED TEXT

1) MARINE DIESEL ENGINES, 6th Edition. By C.T. Wilbur & D.A. Wight, Publish byButterworths.

2) MARINE AUXILIARIES, by D.W Smith, Publish by Butterworths.

3) GENERAL ENGINEERING KNOWLEDGE Volume 8, Reed Series. By Leslie Jackson.

4) NAVAL ARCHITECTURE FOR MARINE ENGINEERS, Volume 4, Reed Series. By E.A.

Stokes.

5) NAVAL ARCHITECTURE FOR MARINE ENGINEERS by W. Muckle.

6) MARINE DIESEL ENGINES, by D.K. Sanyal, Published by Bhandarkar, Mumbai.

7) PRINCIPLES OF NAVAL ARCHITECURE, VOL I,II AND III. Publish by Society of NavalArchitecture and Marine Engineers, USA.