DieselShip's Online Content Library

Q1. What is an Enhanced Survey Program? Which SOLAS chapter covers it?

When and Which type of vessels it becomes applicable?

Describe procedural method of ESP for engine room, as a Second Engineer Which parts and structures you will present for ESP? (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)

Q1. With reference to Cylinder Liner lubrication of large two stroke engines. (16)

a) Outline the problems associated with improper lubrication of the liner and piston assembly of a large slow speed engine.

b) Describe and state the causes of cloverleafing and micro-seizure

c) List out the composition of a cylinder oil suitable for an engine operating on residual fuel.

--- Previously Asked As ---

Q5. a) Outline the problems associated with effective lubrication of the liner and piston assembly of a large slow speed engine. (6)

b) What are the causes of cloverleafing and micro seizure. (5)

c) Explain the composition of a cylinder oil suitable for an engine operating on residual fuel. (5)

2021/JAN/06

Q6. A. Outline the problems associated with effective lubrication of the liner and piston assembly of a large slow speed engine.

B. Describe the appearance and state the causes of each of the following:

i. Clover-leafing.               ii. Micro-seizure

C. Describe the composition of a cylinder oil suitable for an engine operating on residual fuel.

Q1. a) State the reasons for the freeboard requirement. (6)

b) Explain the term condition of assignment and explain how these are maintained for a ship. (5)

c) What is the difference between a Type “A” and a Type “B” ship. (5)

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)

Q1. Describe the procedure to be undertaken when, upon a routine schedule for changing Exhaust Valve on a main engine, it is found that the Exhaust valve body is seized inside the cylinder head and cannot be removed by conventional means and also the internal threads in the exhaust valve body connecting to the exhaust bellows are damaged. (16)

Q2. a) Sketch and describe a high-pressure cut-out in a refrigeration system. (6)

b) The refrigeration compressor has stopped due to operation of the H.P. cut-out. (6)

Explain: (i) The possible causes.

ii) How these causes would be found and possible remedies.

c) What steps are taken if the compressor “Short-cycle” on low pressure cut-out? (4)

Previously Asked As

Q8. With reference to Air-conditioning system onboard your vessel:

(a) Sketch and describe high pressure cut-out in a refrigeration system.

(b) The refrigeration compressor has stopped due to operation of the h.p cut-out Explain.

(i) The possible cause.

(ii) How these causes would be found and possible remedies.

(c) What steps are taken if the compressor “short-cycle” on low pressure cut-out?

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)

Q2. With respect to MARPOL 73/78, Annex - II, Noxious liquid chemicals are divided into categories.

a) State the number of categories, and what does each category signify. (7)

b) State the requirement of Procedures and Arrangements Manual, and what information is available. (7)

c) What are the latest amendments in IBC code. (6)

--- PREVIOUSLY ASKED AS ---

Q6. With respect to MARPOL 73/78, Annex - II, Noxious liquid chemicals are divided into categories; A. State the number of categories, and what does each category signify. B. State the requirement of Procedures and Arrangements Manual, and what information is available.

Q1. A. With respect to measuring instruments, what is the difference between analogue and digital measuring instruments. Explain the working principle of each type. (8)

B. Describe with the aid of simple sketches one analogue and one digital measuring instrument you have used onboard. (8)

Q2. It is found that the tie rods are persistently becoming slack:

A. State, with reasons, the possible causes: (6)

B. State, with reasons, the likely effects on the engine if it is allowed to operate with slack tie rods. (5)

C. Explain how this problem can be minimized? (5)

Q2. With reference to Bridge control of a large slow speed propulsion engine.

A. How is starting and reversing achieved? (8)

B. Investigate and suggest remedial action required if the engine, (8)

(i) Fails to turn on air.

(ii) Turns on air but fails to fire on fuel.

(iii) Fails to reverse.

Q2. With respect to power transformers explain the following protections: (16)

a. Overload protection.

b. Overcurrent protection for phase faults.

c. Earth Fault protection.

d. Differential protection.

e. Directional protection.

Q3. (a) Briefly discuss the principle and the key components and elements of an ICCP system, outlining their functions in safeguarding the integrity of metal structures on ships. (8)

(b) Explore the advancements in ICCP technology over the years and how these innovations contribute to more efficient and sustainable corrosion protection. (8)

Q3. With reference to Annex VI of MARPOL, what are the salient features of

a) EEXI (Energy Efficiency Existing Ship Index) (5)

b) EEOI (Energy Efficiency Operational Indicator) (5)

c) Enhanced SEEMP (Ship Energy Efficiency Management Plan) (5)

d) CII (Carbon Intensity Indicator) (5)

Q3. a) With the aid of a sketch describe the method of attachment for a bilge keel and hence explain what protection is made to reduce the possibility of the shell being punctured in the event of damage to the keel. (6)

b) State why the keel does not extend for the length of the ship. (5)

c) Evaluate the effectiveness of bilge keels for large wall sided vessels. (5)

Q3. a) Briefly explain the term metal fatigue and further explain how fatigue failure occurs. (4)

b) State the difference between high stress/low cycle and low stress/high cycle fatigue giving example of each. (4)

c) State how defects in the metal can influence the expected safe life of a component. (4)

d) State how fuel injection timing and cylinder power balance influence the possibility of fatigue cracks developing in the bedplate. (4)

---Previously Asked As---

2023/NOV/01 - 2024/OCT/02 - 2025/DEC/09

Q9. a) Explain metal fatigue and how fatigue failure occurs. (4)

b) Differentiate between high stress/low cycle and low stress/high cycle fatigue giving example of each. (4)

c) How do defects in the metal influence the expected life of a component. (4)

d) How does fuel injection timing and cylinder power balance influence the possibility of fatigue cracks developing in the bedplate. (4)

Q3. With regards to modern 4-stroke diesel engines, explain the following.

A. The function of protection ring installed on the upper part of liner.

B. The modification in fuel injection drive system compared to conventional 4-stroke engine.

C. Staggering of layout for multi hole nozzles.

D. Effect of swirl and squish during the combustion process and how swirl and squish is generated. (16)

Q4. Explain how PSC is different from FSC/FSI? Discuss Clear Grounds under SOLAS, MARPOL and the STCW with examples. (20)

Q2. a) Draw a simple line diagram of the bow of a ship to show the position of the following component parts of the ships anchoring system.  Hawse pipe, Cable stopper, Windlass and Cable lifter, Spurling pipe and Chain locker. (6)

b) Describe the cable stopper and state its purpose. (3)

c) Show by means of a sketch how the anchor cable is attached to the ship. (3)

d) Describe how the chain locker is drained of water, sand and mud. (4)

Q4. (a) What different methods are used for preserving ship’s hull during service. What type of Antifouling coats are used. (8)

(b) State what materials are being banned by international regulation for use in Antifouling coats and the reason for banning. (4)

(c) Discuss briefly how does paint coating on deck differ from that on super structure. (4)

Q3. In A.C. generators, voltage dip occurs in two stages.

A. I. Sketch a voltage-time graph showing the pattern of voltage dip. (6)

II. Referring to this graph, state with reasons the effect on the electrical system of a small power installation when a large load is suddenly switched on. (4)

B. Explain EACH of the following categories of voltage control: (6)

(i) Error operated. (ii) Functional.

Q4. With reference to air receivers and bottles explain with reasons:

A. Why regular systematic internal inspection is advisable. (4)

B. Which internal areas of large receivers should receive particularly close examination. (4)

C. How bottles are inspected internally and what parts should be closely examined. (4)

D. How the condition of a bottle or receiver that cannot be inspected internally is checked. (4)

Q4. Sketch and describe the arrangement of a main engine camshaft chain. Describe the repair procedure following fracture of one chain link during operation of the engine. Give possible reasons for the failure and explain how the chain is set initially at the correct degree of tension. (16)

Q5. With reference to membrane tanks for the carriage of liquefied gas at very low temperatures.

a) Describe with a sketch one method of building up the insulation. (6)

b) State which alloy is used for the membrane and the reason. (5)

c) Explain why a secondary barrier is installed. (5)

Q4. In some circumstances electrical current may be induced into the shafting of rotating machinery.

a) State the problem that may be caused by this current. (6)

b) Explain with aid of sketches, how currents may be avoided or reduced in the following instances:

(i) D.C machines

(ii) Main shafting fitted with a bronze propeller (5X2)

Q5. Discuss the following with respect to International Safety Management (ISM) code:

a) Emergency preparedness, drills and training. (7)

b) Reporting of near miss, non-conformities, accidents/incidents and hazardous occurrences. (7)

c) Risk assessment Identification of critical equipment, tests and minimum spares requirement. (6)

Q5. List the maintenance routines you plan to carry out on the deck hydraulic cranes, winches and mooring machineries before arrival port after a long voyage, considering the fact that cargo operation is solely dependent on the proper Functioning of the crane and winches. (16)

Q5. An engine room is operating in the unmanned (UMS) mode, in the event of a failure of the UMS systems explain the arrangements a second engineer officer should introduce to operate the machinery in manual mode for a passage of 10 days duration. (16)

Q5. With reference to piston rings. (16)

A. State the reasons for breakage.

B. How maintenance and engine operation could minimize breakage?

C. Explain the possible consequences with respect to performance and safety of operating the engine with broken or severely worn piston rings

PREVIOUSLY ASKED

Q4. With reference to Main engine piston rings:

(a) Analyze the causes of piston ring breakage.

(b) How maintenance and engine operation can minimize piston ring breakage.

(c) Explain the possible consequences with respect to performance and safety of operating the engine with broken or severely worn piston rings

Q6. With reference to the crankshaft deflection of main engine crank shaft,

a) State the ideal conditions required before taking deflections. (6)

b) How is the accuracy of the reading taken are ensured? (6)

c) What is the purpose of taking deflection and how is the reading taken interpreted? (4)

Q6. Discuss on the following with respect AFS Convention:

a) Salient features and benefits of AFS Convention (5)

b) Benefits of new generation TBT free paints (5)

c) Survey and certification requirements for vessels GT 400 and above. (5)

d) Survey and certification requirements for vessels GT less than 400. (5)

Q6. A. Explain the significance of the root- mean- square value of an alternating current or voltage waveform: Define the form factor of such a wave form. (6)

B. Draw the circuit of Half-wave rectifier and its output waveform. A diode whose internal resistance is 20𝛀 is to supply power to 1000 𝛀 load from 110 V (RMS) source. Calculate

(i) peak load current, (ii) DC load current, (iii) AC load current. (10)

Q2. a) Define creep and specify the conditions under which it occurs? (8)

b) Discuss three metallurgical processing techniques that are employed to enhance the creep resistance of metal alloys (8)

- - - PREVIOUSLY ASKED - - -

Q2. a) Define creep and specify the conditions under which it occurs? (6)

b) Discuss the various metallurgical processing techniques that are employed to enhance the creep resistance of metal alloys (10)

Q6. A. Describe how the force on the ship’s bottom and the GM vary when grounding takes place. (6)

B. A ship of 8,000 tonnes displacement takes the ground on a sand bank on a falling tide at an even keel draft of 5.2 metres. KG 4.0 metres. The predicted depth of water over the sand bank at the following low water is 3.2 metres. Calculate the GM at this time assuming that the KM will then be 5.0 metres and that mean TPC is 15 tonne. (10)

Q6. A. Explain how static and dynamic imbalance of crankshafts can be overcome. (5)

B. Discuss the methods employed to obtain primary, reciprocating balance in an engine and explain why they are not completely successful. (5)

C. Describe engine additions which may be fitted to overcome problems resulting from primary or secondary imbalance. (6)

Q7. Explain EACH of the following metallurgical processes:

(a) Induction hardening (4)

(b) Nitriding (4)

(c) Case hardening (4)

Q7. (a) Cast iron welding is a challenging task, give reasons. (8)

(b) What alternative repair methods were employed by engine makers on a cast iron casing of an engine? (8)

Q7. A. Describe stability requirement for dry-docking. (6)

B. A box shaped vessel, 50 metres long × 10 metres wide, floats in salt water on an even keel at a draft of 4 metres. A centre line longitudinal watertight bulkhead extends from end to end and for the full depth of the vessel. A compartment amidships on the starboard side is 15 metres long and contains cargo with permeability 30%. Calculate the list if this compartment is bilged. KG = 3 metres. (10)

Q7. a. By means of a schematic circuit diagram illustrate the peak rectifier. If the supply voltage is v(t) = Vra Sin wt, what is the voltage across the load resistor? (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:

(i) The speed.

(ii) The gross torque developed by the armature. (10)

Q7. a) State where information can be obtained with regard to the safe carriage of hazardous substances as cargo. (8)

B. For a hazardous cargo of your choice discuss the following. (12)

i) Storage and transport.

ii) Hazardous properties.

iii) Firefighting and suppression techniques.

iv) Medical effects and treatment after physical contact with the cargo.

Q7. Describe the procedure for overhauling a boiler safety valve and explain using sketches where necessary those parts, which require close attention. Also describe the procedure for setting of boiler safety valves. (16)

---Previously Asked As ---

2011/JAN/06 - 2011/MAR/02 - 2012/SEP/04 - 2015/OCT/06 - 2016/AUG/05 - 2017/FEB/05 - 2018/FEB/06 - 2021/AUG/03 - 2022/JAN/02 - 2022/APR/05

Q2. A). Describe the overhaul of a boiler safety valve and explain using sketches where necessary those parts which require particularly close attention;

B). Describe the setting of boiler safety valve to comply with classification society requirements.

Q8. What are the core features of the FSS Code? (International fire safety systems code). Elaborate on any one test prescribed by the Code. (20)

Q8. A. List the factors that determine the starting torque of the three-phase induction motor. How does this torque generally compare with the value of the rated torque? (6)

B. A three phase induction motor is wound for four poles and is supplied from a 50 Hz system. Calculate.

i. The synchronous speed.

ii. The speed of the rotor when the slip is 4 per cent.

iii. The rotor frequency when the speed of the rotor is 600 r.p.m. (10)

Q8. (a) Sketch a sealing arrangement for an oil lubricated stern tube. (4)

(b) Identify the common forms of seal failure. (4)

(c) State how oil loss due to seal failure can be restricted whilst on Passage. (4)

(d) How the aft bearing is designed to minimize the concentrated load? (4)

Q8. A. Define longitudinal centre of gravity (LCG) and longitudinal centre of buoyancy (LCB). (6)

B. A ship 120m long floats has draughts of 5.50m forward and 5.80m aft. MCT1 cm 80 tonne m, TPC 13, LCF 2.5m forward of midships. Calculate the new draughts when a mass of 110 tonne is added 24m aft of midships. (10)

Q8. A LT cooler of the centralized cooling water system on your ship is showing poor performance. What measures you would initiate to rectify the problem and improve the performance. (16)

Q8. With reference to feed regulation:

a) Describe, with the aid of sketches, the operation of a boiler feed water regulator controlled by at least two other parameters besides water level in the drum. (8)

b) Give reasons for the inclusion of the other elements besides water level in controlling feed flow. (4)

c) Deduce the possible effects on the system when the drain valve in the constant leg in the level transmitter starts to leak. (4)

Q9. a) Sketch and explain a fuel injection pump capable of variable injection timing. (10)

b) Explain how the fuel injection pump sketched in part (a) changes the timing and quantity of fuel injection. (6)

Q9. With reference to the auxiliary engine big end bearing.

(a) State the various inspections done on the bearing shells, crank pin, serrations on the con-rod and bolts. (6)

(b) How is the bearing assembled after inspection? (4)

(c) Describe the various checks carried out after assembling the bearing. (6)

Q9. A. What are the main components of ship resistance that a vessel encounters while moving through water. (6)

B. The speed of a ship is increased to 18% above normal for 7.5 hours and then reduced to 9% below normal for 10 hours. The speed is then reduced for the remainder of the day so that the consumption for the day is the normal amount. Find the percentage difference between the distance travelled in that day and the normal distance travelled per day. (10)

Q9. With reference to a recent ILO notice on the health hazards from asbestos.

a) State where asbestos may be found on board ship. (6)

b) State the health risks from asbestos. (7)

c) Outline the precautions necessary to minimize exposure to asbestos during an emergency repair. (7)

Q9. A. What is leakage flux as it applies to the iron-core transformer? How is it considered in the analysis of the transformer? (6)

B. Three conductors fitted side by side in the stator of a salient-pole alternator. Each generates a maximum voltage of 200V (sinusoidal). The angle subtended at the centre of the stator between adjacent conductors is 20 electrical degrees. If the three conductors are connected in series, find (i) the r.m.s. value of the effective voltage and (ii) the ‘breadth factor’. Using the theory that is the basis of this problem, give one reason why three-phase current has been introduced. (10)

Q9. A. Sketch and describe a Pilgrim Nut for securing a propeller to the screw shaft. (8)

B. Describe how this device is used to loosen the propeller on the shaft when removal or inspection becomes necessary. (4)

C. Give reasons why this method is considered to be superior to all other methods. (4)

Q10. A. What are the factors which determine the synchronous speed of a motor? (6)

B. A twelve-pole, three-phase, delta-connected alternator runs at 600 rev/min and supplies a balanced star-connected load. Each phase of the load is a coil of resistance 35 ohm and inductive reactance 25 ohm. The line terminal voltage of the alternator is 440V. Determine (a) frequency of supply (b) current in each coil (c) current in each phase of the alternator (d) total power supplied to the load. (10)

Q10. With reference to fixed pitch propellers:
a. Explain Propeller Slip and Propeller Thrust. (6)
b. The shaft power of a ship is 3000 kW, the ship’s speed V is 13.2 knot. Propeller RPS is 1.27. Propeller pitch is 5.5 m and the speed of advance is 11 Knots. Find:
i. Real Slip
ii. Wake fraction
iii. Propeller thrust, when its efficiency, η = 70% (10)