Yacht Second Engineer Certification Exam: Operational Procedures & Ship Construction

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

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

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

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.

The relief valve on the separator shell allows excess pressure to be released, preventing damage to the system.

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

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

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

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.

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

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.

(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).

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.

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.

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.

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.

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.

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.