Yacht Engineer Certification Exam: Operational Procedures and Ship Construction

What is the purpose of Merchant Shipping Notices?

To provide important information and instructions regarding shipping regulations and safety.

What is the purpose of Marine Guidance Notes?

To provide guidance and recommendations on specific maritime procedures or practices.

What is the purpose of Marine Information Notes?

To disseminate general information and updates relevant to the maritime industry.

List four different engine operating parameters to be recorded for an electrical alternator driven by an auxiliary diesel engine.

<ol> <li>Temperature 2. Pressure 3. Fuel consumption 4. Oil level</li> </ol> Signup and view all the answers

List three different generator output parameters to be recorded for an electrical alternator driven by an auxiliary diesel engine.

<ol> <li>Voltage 2. Current 3. Frequency</li> </ol> Signup and view all the answers

State three engine operating parameters that will increase as the load is increased on the alternator, with reasons.

<ol> <li>Temperature: Due to increased workload. 2. Fuel consumption: More power required. 3. Pressure: Higher demand on the engine.</li> </ol> Signup and view all the answers

What is the purpose of a planned maintenance system?

To schedule and manage regular maintenance tasks to ensure the continued operation and reliability of equipment. Signup and view all the answers

State three parameters on which planned maintenance may be based.

<ol> <li>Time intervals 2. Usage hours 3. Manufacturer recommendations</li> </ol> Signup and view all the answers

How can an approved planned maintenance system influence classification society requirements?

An approved planned maintenance system can influence classification society requirements by demonstrating that the vessel is being properly maintained according to established procedures and schedules. This can lead to more favorable treatment from the classification society in terms of survey intervals, extent of surveys, and acceptance of machinery condition. Signup and view all the answers

For the purpose of the garbage record book under MARPOL Annex V, list the nine categories into which garbage is grouped.

The nine categories of garbage in the garbage record book are: 1) Plastics, 2) Food wastes, 3) Domestic wastes, 4) Cooking oil, 5) Incinerator ashes, 6) Operational wastes, 7) Cargo residues, 8) Animal carcasses, 9) Fishing gear. Signup and view all the answers

Describe the biological operating principle of an aerobic sewage treatment plant, and explain the dangers if a supply of oxygen is not present.

An aerobic sewage treatment plant relies on aerobic bacteria to break down organic matter in the sewage. These bacteria require a constant supply of oxygen to survive and function. If the oxygen supply is interrupted or insufficient, the aerobic bacteria will die off, and the treatment process will become anaerobic, leading to the buildup of toxic gases like hydrogen sulfide and methane, as well as incomplete breakdown of sewage. Signup and view all the answers

How is a sufficient supply of oxygen ensured in an aerobic sewage treatment plant?

A sufficient supply of oxygen is ensured in an aerobic sewage treatment plant through the use of aeration systems, which introduce air or pure oxygen into the treatment tanks. Common aeration methods include surface aerators, diffused air systems, and pure oxygen injection. Signup and view all the answers

Define (i) Wet Bulb Temperature and (ii) Relative Humidity.

(i) Wet Bulb Temperature is the temperature indicated by a thermometer with a wet bulb, which measures the cooling effect of evaporation on the bulb. It is lower than the dry bulb temperature. (ii) Relative Humidity is the amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature. Signup and view all the answers

State the countermeasures that need to be taken to reduce the risks of Legionella in an Air Conditioning system.

Countermeasures to reduce Legionella risks in air conditioning systems include: maintaining water temperatures outside the bacteria growth range, using biocides, regularly cleaning and disinfecting the system, ensuring proper drainage to prevent stagnant water, and implementing a water management plan with testing and monitoring. Signup and view all the answers

With the aid of a sketch, describe the construction of a spirally wound membrane suitable for use in a Reverse Osmosis water making plant, identifying all component parts.

A spirally wound membrane consists of a permeate collection tube surrounded by membrane envelopes separated by permeate carriers and feed spacers. The membrane envelope is made of a semi-permeable membrane sheet sealed around a permeate carrier fabric. Feed water flows along the membrane surface, with purified water passing through the membrane into the permeate carrier and collection tube. Signup and view all the answers

With the aid of a sketch, explain how a stabilizer fin produces a stabilizing effect as the vessel moves through the water.

A stabilizer fin produces a stabilizing effect by generating a hydrodynamic lifting force that counteracts the rolling motion of the vessel. As the vessel rolls, the fin moves through the water at an angle of attack, creating lift in the opposite direction of the roll. This lift force acts to dampen the rolling motion and stabilize the vessel. Signup and view all the answers

Yacht Engineer Certification Exam: Operational Procedures and Ship Construction

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