Marine Engineering Quiz

A ship’s hatch covers are leaking despite regular gasket replacement. What could be the root cause?

• Poor quality rubber gaskets not meeting the compression standard

• Misalignment of compression surfaces during operations

• Inadequate drainage channels for removing excess water

• Rust accumulation on the underside of hatch panels

What type of system is used to monitor oil content in OWS discharge?

• Acoustic wave detector

• Infra-red thermal analyzer

• Digital ppm analyzer

• Ultra-violet fluorescence meter

While offloading crude oil from a tanker, the cargo system needs to handle large volumes quickly. Which pump is best suited for this operation?

• Screw pump for high-viscosity liquids

• Centrifugal cargo transfer pump system

• High-pressure fire pump for emergencies

• Bilge water removal pump for drainage

A hydraulic watertight door leaks fluid during a fire drill. What immediate action is required?

• Inspect the hydraulic cylinder for damage or wear

• Replace the door seals and perform another test

• Adjust the sliding track to improve alignment

• Refill the hydraulic system with additional fluid

What is the primary purpose of deck machinery on a ship?

• To improve ship speed during voyages

• To aid in passenger navigation on board

• To reduce fuel consumption during anchoring

• To handle docking, loading, and cargo operations

To remove water that collects at the lowest part of the ship, which pump is needed?

• Centrifugal ballast adjustment pump

• High-capacity bilge water removal pump

• Screw-type viscous liquid handling pump

• Positive displacement oil transfer pump

Operators notice a decline in hydraulic pump performance. What could be causing this issue and reducing pump efficiency?

• Insufficient lubrication in moving parts

• Air bubbles forming and reducing efficiency

• Overheating of hydraulic fluids during use

• Contaminated hydraulic fluids affecting flow

How does a centrifugal pump maintain efficiency during ballast operations?

• By converting rotational energy into flow

• By using hydrophore-assisted pressure control

• By pumping at high pressure to multiple tanks

• By grinding solid waste into smaller pieces

A crane’s rotation bearing is not lubricated regularly. What is the likely impact on its operation?

• Improved alignment and speed of rotation

• Reduced safety risk during heavy lifting

• Enhanced operational efficiency under load

• Increased friction and potential bearing failure

Operators are calibrating tension sensors to ensure accurate readings during cargo operations. Why is this process crucial for safety?

• To ensure correct weight distribution in cargo loads

• To avoid sensor damage caused by overloading

• To reduce wear on hydraulic system actuators

• To maintain accurate tension readings for safety