STCW Marine Engineering 5

Question 1

What action should be taken if the lube oil pressure drops to the low-pressure alarm level on a running main engine?

Accepted Answer

Reduce speed immediately and investigate; be prepared to shut down

Answer

Low lube oil pressure risks catastrophic bearing damage; the immediate response is to reduce load and investigate the cause, with readiness to perform an emergency shutdown.

Question 2

What is the purpose of a soot blower on a marine boiler?

Accepted Answer

To blow steam or air across fire-side tube surfaces to remove soot and ash deposits

Answer

Soot blowers direct high-velocity steam or air jets across the fire-side surfaces of boiler tubes to dislodge soot and ash that reduce heat transfer efficiency.

Question 3

Which STCW amendment introduced the Manila Amendments that significantly updated engineering officer requirements?

Accepted Answer

2010 Manila Amendments

Answer

The 2010 Manila Amendments to STCW substantially revised competence standards, including new requirements for engineering officers covering modern propulsion and control technologies.

Question 4

What is the function of the air cooler (charge air cooler) located after the turbocharger and before the engine intake manifold?

Accepted Answer

To reduce compressed air temperature, increasing its density and oxygen content

Answer

Cooling compressed charge air increases its density, delivering more oxygen per charge and reducing thermal loading on pistons and liners.

Question 5

When transferring fuel oil from a storage tank to a settling tank, which parameter is most important to monitor?

Accepted Answer

Level in both tanks to prevent overflow or running dry

Answer

Monitoring both tank levels prevents overfilling the settling tank (causing overflow pollution) and running the storage tank dry (air-locking the transfer pump).

(STCW) Standards Certification and Watchkeeping for Seafarers Practice Test

(STCW) Standards Certification and Watchkeeping for Seafarers Practice Test

STCW Marine Engineering 5