DieselShip's Online Content Library

Q5. a) Sketch the cross-section of a bulk carrier with either deep or shallow double bottom showing the type of framing used. (8)

b) i) Describe the corrosion problems experienced with ballast tanks. (4)

ii) State how such tanks are protected against extensive corrosion. (4)

Q1. Prepare a proposal for safe manning requirements for a ship of your choice taking into account the IMO guidelines on the issue, also considering frequent port calls, rest hour management and high-risk areas. (20)

--- PREVIOUSLY ASKED AS ---

2019/JUL/06

Q6. Prepare a proposal for safe manning requirements for a ship of your choice, considering frequent port calls, rest hour management and high risk areas.

Q5. With reference to a three-phase shipboard electrical distribution system: (16)

a) Enumerate the advantages of an insulated neutral system.

b) Enumerate the disadvantages of an insulated neutral system.

c) Describe how the earthed neutral system is Earthed.

d) Compare the use of an insulated neutral system as opposed to the use of an Earthed neutral System with regard to the risk of electric shock from either system.

Q1. Suggest a procedure (in about 200 words) to the Chief Engineer, as to how you propose to ensure that the engine room overhead crane is maintained and operated correctly.  What tests certificates are required for the overhead crane, and who is the issuing authority.

Q1. Sketch and show all parts of a two-stroke engine stuffing box. Describe the procedure of overhauling two stroke engine stuffing box, without removing piston. Answer should include all safety precautions and necessary tools used for stuffing box overhaul. (16)

- - - PREVIOUSLY ASKED - - -

Q1. Sketch and show all parts of a two-stroke engine stuffing box. Describe the procedure of overhauling two stroke engine stuffing box, without removing piston. All safety precautions and proper tools used for overhaul to be mentioned. (16)

Q1. With reference to the fuel standards ISO-8217-2017 discuss the amendments made as compared to its previous edition. Explain the significance of the following:

(a) Pour point, cloud point and cold filter plugging point.

(b) Cat fines

(c) Fatty Acid methyl Ester

(d) Dissolved H2S in fuel.

Q2. Describe the process and preparation as per the classification society requirements for in-water survey of the underwater structure of a very large vessel.

Q2. Auxiliary engine components often face demanding service conditions. Analyse how the addition of alloying elements (such as silicon, chromium, and manganese) to cast iron influences the corrosion resistance, hardness, and thermal stability of these parts. Provide examples of auxiliary engine components that benefit from such alloying. (16)

Q2. With reference to Air conditioning systems onboard for accommodation spaces:

a) Sketch and explain a fully automated air conditioning system, annotating the relevant temperatures and relative humidity’s throughout the system. (12)

b) Explain how bacteria are prevented from growing in an air conditioning system to a dangerous degree. (4)

Q3. Explain the principle of port State control and give in detail the verification the Port State Control Officer may carry out with particular reference to the following;

A. Emergency generator; B. Auxiliary steering gear; C. Lifeboat engine; D. Bilge pumps; E. SOPEP.

--- PREVIOUSLY ASKED AS ---

2020/FEB/07 - 2021/NOV/07 - 2022/JUL/08 - 2025/SEP/07

Q7. Explain the principle of port State control and give in detail the verification the State control Officer may carry out with particular reference to the following:

A. Emergency generator. (4)

B. Main switchboard. (4)

C. Lifeboat. (4)

D. Oily water separator. (4)

E. Navigational lighting. (4)

Q2. A. Explain the meaning of the term power factor correction. (16)

B. State TWO advantages of power factor correction.

C. Explain, with the aid of a circuit diagram, how power factor correction can be effected in a three phase circuit using capacitors.

D. Explain one method other than the use of capacitors by means of which power factor correction may be effected.

Q2. A. Describe the survey procedure of an oil lubricated stern bearing and shaft. (8)

B. Explain how the integrity of the outboard seal of an oil lubricated stern tube may be proved before the dry-dock is flooded. (8)

Q3. Sketch and describe the construction of a bulbous bow. Why is such an arrangement fitted on a merchant ship?

Q3. A. Define the meaning of the term "Conditions of Assignment" as applied to ships; (7)

B. State how conditions of assignment contribute towards the watertight integrity of ships; (7)

C. Give reasons why conditions of assignment need periodic inspection, giving specific instances where they can be found to be less than fully effective. (6)

Q3. a) Describe the key phases and microstructures present in the iron-carbon equilibrium diagram and explain their significance in the heat treatment of steel. (8)

b) How do the different regions of the iron-carbon diagram influence the mechanical properties of steel, such as hardness, toughness, and ductility? Provide examples of how specific compositions and heat treatments can achieve desired properties. (8)

Q3. Express your reactions and state the subsequent investigation you would make if a laboratory report on a used diesel engine oil sample indicated the presence of appreciable amounts of: (16)

A. Iron

B. Copper

C. Antimony and Tin

D. Silicon

E. n-pentane and toluene insoluble.

--- PREVIOUSLY ASKED AS ---

2015/OCT/04 - 2011/MAR/04

Q4. Express your reactions and state the subsequent investigation you would make if a laboratory report on a used diesel engine oil sample indicated the presence of appreciable amounts of: - A. Iron; B. Copper, antimony and tin; C. Silicon.

Q3. List at least two factors that cause deterioration of the frequency response of a transistor amplifier. Explain how each factor affects the performance of the amplifier and the portion of the frequency range where it is effective. (16)

Q3. Fatigue is one of the main causes of crankshaft failure.

A. Indicate on a sketch the most likely location of a fatigue crack. (4)

B. Explain how a fatigue failure is identified. (4)

C. Describe how a fatigue crack may be initiated. (4)

D. Describe, with the aid of sketches, the methods used to inhibit fatigue cracks. (4)

Q4. With reference to the vessel hull panting and pounding

a) Explain the causes and effect of panting and pounding, indicating the affected areas.

b) Describe the constructional details designed to resist panting and pounding.

Q4. a) Explain what is meant by the term single phasing. (5)

b) Explain the probable effect of single phasing on a delta connected squirrel cage induction motor on 75% full load. (5)

c) State a method by which a motor can be protected against the effects of single phasing. (6)

Q4. Describe the different types of crankshafts used in marine diesel engines. Highlight their constructional features, materials used, and typical applications. (8)

(b) Compare the advantages and disadvantages of semi-built and solid forged crankshafts with respect to strength, repairability, manufacturing process, and suitability for different engine sizes. (8)

Q4. a) As per SOLAS regulations, what checks and tests must be carried out on the steering gear system before the ship’s departure from port? Explain the procedures involved and the documentation required. (8)

b) Explain the construction, working and purpose of hunting gear in a steering gear system. What are the consequence of its failure? (8)

Q1. Name various Statutory Certificates and Documents to be carried on board container ships giving reference to the conventions and justify for their requirement. (20)

Q4. An auxiliary engine exhibits a tendency to hunt to such an extent that the engine speed variation prohibits the connection of the machine to the switchboard. A. Discuss the possible causes of hunting; B. Explain how the problem of hunting can be rectified.

Q5. a) Explain the objectives and scope of SOLAS Chapter XII. What are the structural and operational safety measures required for bulk carriers carrying high-density cargoes? (10)

b) Discuss the requirements related to the fitting of water ingress alarms and loading/unloading procedures. Why are these measures critical for the safety of bulk carriers? (10)

Q5. a) Describe the actions and checks required to ensure that a crosshead main propulsion engine may be operated in a slow steaming condition. (8)

b) Explain the problems which may arise during a prolonged period of slow steaming. (4)

c) Explain what actions should be taken before and after the engine is returned to normal operation after a period of slow steaming. (4)

Q5. (a) Describe the relationship between frictional resistance and

(a) Ship’s speed. (4)

(b) The wetted area. (4)

(c) The surface roughness. (4)

(d) The length of the vessel. (4)

Q5. For a fully automatic provisions refrigeration system incorporating a number of rooms.

A. Explain how each room temperature is set.

B. Describe the sequence of events following a demand for increased refrigerant flow from on room.

C. State with reasons the devices incorporated into the system to protect the machinery and equipment against malfunction.

D. State how satisfactory operation of the plant can be established? (16)

Q5. A) Describe the circuit breaker for an A.C. generator using a sketch to show how arcing is controlled. (6)

(B) Explain the sequence of events that might occur if the breaker opens on a short circuit and state the check you would require following such event. (5)

(C) Give a safe procedure to follow should a main circuit breaker fail to open under fault Condition. (5)

Q5. With reference to fuel oil viscosity: (16)

(a) Explain why correct fuel oil viscosity is necessary

(b) Describe TWO methods for the measurements of viscosity that are suitable for the inclusion into a pneumatic or electronic control system.

(c) State, with reasons, a control action for a viscosity controller.

Q6. One of the F.O. Storage tank in the engine room is due for survey by classification society. Keeping in mind the safety of personnel, Enlist the procedure you will follow, to prepare the same for internal examination. (16)

Q6. Compare and contrast open-loop, closed-loop, and hybrid EGCS. What are the advantages and disadvantages of each system, and in what scenarios is each type preferred? (16)

Q6. a) Briefly discuss the purpose and structure of MLC, 2006. (7)

b) What are the health and safety protections offered to seafarers under MLC? (7)

c) Describe the onboard complaint procedures as per MLC. (6)

Q6. (a) Explain the need for a moment compensator in large two-stroke marine engines. With the help of a neat sketch, describe the construction and working principle of a moment compensator. (10)

(b) Discuss the consequences of failure or incorrect functioning of the moment compensator in a two-stroke engine. What checks and maintenance practices are recommended to ensure its reliability? (6)

Q6. a) Describe how the distribution of mass within the ship affects the rolling period. (6)

b) The righting moments of a ship at angles of heel of 0, 15°, 30°, 45°, and 60° are 0, 1690, 5430, 9360 and 9140 kN-m respectively. Calculate the dynamical stability at 60°. (10)

Q6. A. Explain what is meant by the terms wave form, frequency and average value. (6)

B. A moving coil ammeter, a thermal ammeter and a rectifier are connected in series with a resistor across a 110 V sinusoidal a.c. supply. The circuit has a resistance of 50 𝛀 to current in one direction and, due to the rectifier, an infinite resistance to current in the reverse direction. Calculate:

(i) The readings on the ammeters.

(ii) The form and peak factors of the current wave. (10)

Q7. With reference to starting air line systems: (16)

a) List causes leading to starting airline explosion on a 2 stroke engine.

b) List indications that will give warning of above.

c) List action, precautions and maintenance required to prevent above.

Q7. a) What is Hong Kong Convention? When did it come into force? What are its salient features of this convention? (10)

b) How inventory of Hazardous materials (IHM) Part I under Hong Kong conventions is made for ships in operation? What is the Scope of IHM Part I? (10)

Q7. With reference to a keyless propeller designed for hydraulic (wet) fit and withdrawal:

(a) Describe, with the aid of a sketch, how the propeller is fitted to the tail shaft. (10)

(b) State TWO advantages compared to a dry fit: (3)

(c) Explain how the thrust is transmitted without the use of a key and keyway. (3)

Q7. a) Define Specific Cylinder Lubricating Oil Consumption (SCLOC) in a two-stroke marine diesel engine. Derive the formula for SCLOC and explain the procedure for calculating it during normal engine operation. (10)

b) Discuss the factors affecting SCLOC and explain the procedure adopted onboard to optimize cylinder oil consumption. Include methods used for monitoring and adjusting the cylinder lubrication system. (6)

Q7. a) Describe briefly the significance of the factor of subdivision. (6)

b) A ship 120m long has a light displacement of 4000 tonne and LCG in this condition 2.5m aft of midships.  (10)

The following items are then added:

Cargo 10000 tonne      LCG 3.0 m  forward of midships

Fuel 1500 tonne        LCG 2.0 m  aft of midships

Water         400 tonne  LCG 8.0 m  aft of midships

Stores        100 tonne LCG 10.0m forward of midships

Using the following hydrostatic data, calculate the final draughts:

Q7. A. What is leakage flux as it applies to the iron-core transformer? How is it taken into account in the analysis of the transformer? (6)

B. The following results were obtained on a 50 KVA transformer: open circuit test-primary voltage, 3300 V; secondary voltage, 415 V; primary power, 430 W. Short circuit test-primary voltage, 124 V; primary current, 15.3 A; primary power, 525 W; secondary current, full load value. Calculate:

(i) The efficiencies at full load and at half load for 0.7 power factor

(ii) The Voltage regulations for power factor 0.7 (i) Lagging, (ii) Leading

(iii) The secondary terminal voltages corresponding to (i) and (ii). (10)

Q8. (a) Describe, with the aid of a Strain versus Time diagram, how a creep test is carried out to determine the strain rate of the material under test. (6)

(b) Explain EACH of the stages sketched in the diagram in part (a). (4)

Q8. A) Explain how the distribution of masses affects rolling and pitching. (6)

B) A ship turns in a circle of radius 100 metres at a speed of 15 knots. The GM is 2/3 metres and BG is 1 metre. If g = 981 cm/sec2 and 1 knot is equal to 1.8532 Km/hour, find the heel due to turning. (10)

Q8. A. What is Silicon controlled rectifier (SCR)? How is the breakover voltage of the SCR defined? (6)

B. A d.c. motor takes an armature current of 110 A at 480 V. The resistance of the armature circuit is 0.2𝛀. The machine has six poles and the armature is lap-connected with 864 conductors. The flux per pole is 0.05 Wb. Calculate: (a) The speed; (b) The gross torque developed by the armature. (10)

Q8. A vessel is due for International air Pollution Prevention Certificate renewal survey and company instructed to offer this vessel for survey at next port of call.

A. As a 2nd Engineer officer of above-mentioned vessel, what all checks you carry out and how you prepare for the IAPP renewal survey. (10)

B. What records, procedures, certificates etc., you will keep ready for attending surveyor verification. (10)

(Note: Based on the feedback received from candidates, the examiner has corrected Part ‘A’ to IAPP from IOPP)

Q8. Describe the Hull inspection that you would carry out as the senior engineer of ship in dry dock stating what defects you may find and the repairs that may be necessary with respect to:

A. Shell plating.

B. Forward end of ship.

C. Aft end of ship.

D. Openings in shell plating.

E. Rudder.

F. Propeller and stern tube. (16)

Q8. With regards to modern diesel engine raising the Life Cycle Value (LCV) describe the importance of following. (16)

(a) Low Sac Volume of Fuel Injection Valve.

(b) Fuel Valve opening Pressure regulation.

(c) Contamination of combustion Chamber and impact on LCV.

(d) Contamination of lube oil and impact on LCV.

Q9. A. List the factors that determine the maximum developed torque of the induction motor. (6)

B. The primary and secondary windings of a 500 KVA transformer have resistance of 0.42 Ω and 0.0019 Ω respectively. The primary and secondary voltages are 11000 V and 415 V respectively and the core loss is 2.9 kW, assuming the power factor of the load to be 0.8. Calculate the efficiency on (i) Full load (ii) Half load. (10)

Q9.a) Briefly discuss the types of records that can be maintained electronically under MARPOL and the approval process for ERBs. (10)

b) Highlight the advantages of using ERBs compared to traditional paper-based record books and state the measures required to ensure data integrity and security. (10)

Q9. With reference to Crankshaft deflections:

(a) Explain why crankshaft deflections are taken. (4)

(b) Write a procedure for the taking of main engine crankshaft deflections. (8)

(c) Explain the action to be taken if some crankshaft deflection readings are outside acceptable limits. (4)

- - - PREVIOUSLY ASKED - - -

Q2. (a) Explain why crankshaft deflections are taken. (4)

(b) Write a procedure for the taking of main engine crankshaft deflections. (8)

(c) Explain the action to be taken if some crankshaft deflection readings are outside acceptable limits. (4)

Q9. A) Describe the effect of cavitations on the propeller blades. (6)

B) A propeller 4.6m diameter has a pitch of 4.3m and boss diameter of 0.75 m. The real slip is 28% at 95 rev/min. Calculate the speed of advance, thrust and thrust power.  (10)

Q9. With reference to Auxiliary boiler safety valves.

A. Describe, with the aid of a sketch, the safety valves for an auxiliary boiler. (6)

B. Identify with reasons, the parts that require particularly close attention during overhaul. (5)

C. Describe how the safety valves are reset after an overhaul. (5)

Q9. (a) Explain the action of EACH of the following metallurgical mechanism:

(i) Creep

(ii) Brinelling

(iii) Fretting

(iv) Fretting corrosion. (10)

(b) State, with reasons, where EACH of the mechanisms in occur in ship propulsion system. (6)

--- Previously Asked As ---

2022/JAN/08 - 2021/AUG/08

Q8. (a) Explain Creep, Brinelling , Fretting and Fretting corrosion.

(b) Where and why does creep, Brinelling, Fretting and Fretting corrosion occur in a ship propulsion system?

Q10. A balanced star connected three phase load has a coil of inductance 0.2 H and resistance 50 W in each phase. It is supplied at 415 V, 50 HZ. Calculate EACH of the following. (16)

a) the line current.

b) the power factor

c) the value of each of three identical delta connected capacitors to be connected across the same supply to raise the power factor to 0.9 lag.

d) the new value of the current.

Q10. A) Describe the stability requirements of a ship for dry-docking. (6)

B) A ship 130m long displaces 14000 tonne when floating at draughts of 7.5m forward and 8.10m aft. GML – 125m, TPC – 18, LCF-3m aft of midships. Calculate the final draughts when a mass of 180 tonne lying 40m aft of midships is removed from the ship. (10)