6 Questions
During sea trials, which of the following is NOT checked?
The color of the ship's paint
What is the purpose of the main engine endurance test during sea trials?
To test the performance of the engine at full load
Why is the blackout test performed during sea trials?
To observe the automatic starting of the emergency Diesel Alternator set within 45 seconds of the shutdown of all main generators
What is the purpose of the 500V Megger test in the LV switchboard?
To measure the insulation resistance
What is the purpose of carrying out the 2.5kV AC voltage test between stressed phases and exposed conductive parts?
To measure the current leakage
What is the benefit of an Enterprise Membership Plan for electrical engineers?
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Study Notes
The Importance of Sea Trials in Ship Building
- Sea trials are crucial tests carried out on a newly built ship before delivery to ensure it conforms to technical specifications and classification society rules.
- The tests are carried out to guarantee the safety of the ship, crew, and cargo, and to prevent penalties for non-conformance.
- The tests include measuring the draft of the ship to ensure it meets the required specifications and correcting it if necessary.
- The anchor test is performed to check the functioning of the anchoring mechanism and ensure the ship's stability.
- The steering gear test is carried out to assess the manoeuvrability of the ship in case of an emergency.
- The main engine endurance test includes running the engine for six hours at full rated RPM and recording nine measurements to test its performance at full load.
- Speed trials are conducted to check the speed of the vessel at the required draft as per the contract, with a grace margin of 0.3 knots.
- The crash stop test assesses the stopping ability of the ship in an emergency situation.
- The astern running test is carried out to test the manoeuvring capability of the vessel to run in the astern direction.
- The turning circle test measures the diameter of the circular path which the vessel traverses when the rudder is put hard to port or starboard.
- Navigation equipment, such as RADAR and communication systems, are checked during sea trials.
- The blackout test observes the automatic starting of the emergency Diesel Alternator set within 45 seconds of the shutdown of all main generators.
"Test Your Knowledge: The Importance of Sea Trials in Ship Building" Are you familiar with the crucial tests carried out on newly-built vessels before their delivery? Take this quiz to assess your knowledge of sea trials and the various tests performed to ensure the safety of the ship, crew, and cargo. From the anchor test to the turning circle test, this quiz covers all aspects of sea trials and their significance in ship building. Sharpen your knowledge of navigation equipment, engine endurance, and emergency procedures with
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