Yacht Second Engineer Certification Exam: Operational Procedures & Ship Construction

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Questions and Answers

What is the purpose of the sea water inlet valve on the bilge pump?

The sea water inlet valve on the bilge pump allows seawater to be used to operate the bilge pump.

What is the purpose of the air release on the separator shell?

The air release on the separator shell allows air to be released from the separator, preventing air pockets from forming.

What is the purpose of the oil content monitor on the overboard discharge?

The oil content monitor on the overboard discharge measures the oil content of the water being discharged overboard to ensure it meets environmental regulations.

What is the purpose of the baffle plates inside the separator shell?

The baffle plates inside the separator shell help to slow the flow of the water and oil mixture, allowing the oil to separate from the water. Signup and view all the answers

What is the purpose of the relief valve on the separator shell?

The relief valve on the separator shell allows excess pressure to be released, preventing damage to the system. Signup and view all the answers

What conditions must be present for microbes to live and multiply in marine gas oil?

The conditions required for microbes to live and multiply in marine gas oil are the presence of water, oxygen, and nutrients. Signup and view all the answers

What is the effect of microbiological growth in the fuel?

Microbiological growth in the fuel can lead to the formation of sludge, plugging of filters, and corrosion of fuel system components. Signup and view all the answers

How can microbiological contamination in marine gas oil be detected?

Microbiological contamination in marine gas oil can be detected through visual inspection, fuel testing, and monitoring for changes in fuel properties. Signup and view all the answers

How can the risk of microbiological contamination in marine gas oil be reduced?

The risk of microbiological contamination in marine gas oil can be reduced by minimizing water and air ingress, using biocides, and maintaining fuel system cleanliness. Signup and view all the answers

How can microbiological contamination in marine gas oil be removed?

Microbiological contamination in marine gas oil can be removed through filtration, centrifugation, and the use of biocides. Signup and view all the answers

What are the recommended maximum periods of time for personnel employed on watchkeeping duties within enclosed machinery spaces, and why have these recommendations been made?

a) The recommended maximum periods are likely to be specified, e.g. 4 hours with hearing protection, 2 hours without. b) These recommendations have been made to protect personnel from prolonged exposure to high noise levels, which can cause hearing damage and other health issues. Signup and view all the answers

At what noise levels is hearing protection (i) recommended and (ii) mandatory?

(i) Hearing protection is recommended at a specified noise level, e.g. 85 dB(A). (ii) Hearing protection is mandatory at a higher specified noise level, e.g. 90 dB(A). Signup and view all the answers

Explain the importance of following the recommended procedures and checks before switching the Main Propulsion machinery space to UMS (Unmanned Machinery Space) mode.

Proper procedures and checks are crucial to ensure the safe and reliable operation of the machinery while in UMS mode. Failure to follow these procedures could result in equipment failure, damage, or unsafe conditions, putting the vessel and crew at risk. Signup and view all the answers

Describe the potential consequences of prolonged exposure to high noise levels in enclosed machinery spaces, both for personnel and equipment.

Prolonged exposure to high noise levels can lead to hearing damage, stress, and other health issues for personnel. It can also cause fatigue, impaired communication, and reduced situational awareness, increasing the risk of accidents. For equipment, high noise levels can contribute to vibration and premature wear or failure of components. Signup and view all the answers

List and briefly explain five essential checks or procedures that should be performed before switching the Main Propulsion machinery space to UMS mode.

Acceptable answers could include checks or procedures such as: verifying proper operation of alarms, monitoring systems, and emergency shutdowns; inspecting for leaks or abnormal conditions; ensuring adequate fuel, lubricating oil, and cooling water levels; testing remote control and monitoring capabilities; and confirming the readiness of standby equipment or redundant systems. Signup and view all the answers

Describe the potential impact of high noise levels on effective communication and situational awareness in the machinery space, and discuss strategies to mitigate these risks.

High noise levels can impair verbal communication, making it difficult to hear alarms, instructions, or warnings. It can also contribute to fatigue and reduced concentration, impacting situational awareness. Strategies to mitigate these risks include implementing noise control measures, using visual or vibration-based alarms, implementing clear communication protocols, and ensuring adequate rest periods for personnel. Signup and view all the answers

Explain the importance of maintaining accurate and up-to-date records of noise level measurements and personnel exposure in the machinery spaces, and discuss the potential consequences of non-compliance.

Accurate records of noise levels and personnel exposure are essential for monitoring compliance with regulations, identifying areas for improvement, and protecting personnel health. Non-compliance could result in regulatory penalties, legal liabilities, and increased risk of hearing damage or other health issues for personnel. Signup and view all the answers

Describe the role and responsibilities of the engineering watch officer in ensuring the safe and efficient operation of the machinery spaces while in UMS mode, and discuss the potential challenges they may face.

The engineering watch officer is responsible for monitoring and overseeing the machinery spaces while in UMS mode, ensuring proper operation, addressing any alarms or issues, and taking appropriate action. Potential challenges include maintaining situational awareness, responding to emergencies or equipment failures, and ensuring effective communication with other personnel or departments. Signup and view all the answers

Study Notes

Bilge Pumping and Oily Water Separators

Sea water inlet valve on bilge pump: allows sea water to enter the bilge pump to flush out bilge water
Air release on separator shell: releases air that may have accumulated in the separator shell
Oil content monitor on overboard discharge: monitors the oil content in the overboard discharge to ensure it meets regulations
Baffle plates inside the separator shell: help to separate oil from water by slowing down the flow and allowing gravity to separate the two fluids
Relief valve on separator shell: releases excess pressure in the separator shell to prevent damage

Microbiological Contamination of Marine Gas Oil

Conditions for microbial growth: water, temperature, nutrients, and microorganisms must be present
Effects of microbiological growth: corrosion of tanks and pipes, fuel contamination, and engine problems
Detection of contamination: through fuel sampling and analysis
Reducing the risk of contamination: by using biocides, maintaining clean tanks, and monitoring fuel quality
Removing contamination: through fuel treatment and tank cleaning

Calcium Hypochlorite

Precautions for use and storage: handle with gloves and goggles, store in a well-ventilated area, and avoid mixing with other chemicals

Sewage Treatment Plant

Physical properties to monitor: pH, temperature, dissolved oxygen, and biochemical oxygen demand

Environmental Effects

Green House Effect: a process by which certain gases in the atmosphere trap heat and contribute to global warming
Ozone depletion: the reduction of ozone in the stratosphere due to the presence of chlorofluorocarbons and other substances

Refrigeration System

Effect of undercharge: reduced cooling capacity, increased energy consumption, and potential system failure

Micro-organisms in Water

Types of micro-organisms: bacteria, viruses, and protozoa

Silver Ion Sterilizer

Operation: uses silver ions to sterilize water by inhibiting microbial growth

Hydraulic Stabilising System

Active fin hydraulic stabilising operating system: fitted to a vessel to reduce rolling and improve stability

Hydrodynamic Forces

Forces that act on a vessel: frictional resistance, wave resistance, and air resistance

Certificates of Competency for Engineers

Examination details: administered by the Scottish Qualifications Authority on behalf of the Maritime and Coastguard Agency

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Description

Prepare for the Small Vessel Second Engineer certification exam with a focus on operational procedures, basic hotel services, and ship construction. This quiz covers important topics that candidates need to master in order to pass the examination with flying colors.