This page contains answers to Seagull CES test about Ship Energy Efficiency, and serve as a database of questions and answers, using which seafarer can prepare to exams for getting certificate of competence, or just to challenge yourself with knowledge in this theme.
CBT CD 0097 – Ship Energy Efficiency.pdf
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Amount of questions: 26.
Right answers marked with this sign .
About how much of the energy supplied to a marine engine is lost? Select the ONE correct answer:
About 5 %.
About 20 %.
About 50 %.
About 75 %.
According to this module, approximately how much of the cost of running a cargo vessel is due to fuel consumption? Select the ONE best answer:
50 %.
10 %.
20 %.
80 %.
According to this module, how much fuel can be saved by fitting a bulbous bow to some ships? Select the ONE best answer:
Up to 5 %.
Up to 20 %.
Up to 40 %.
Up to 60 %.
According to this module, how often should a traditional antifouling paint be applied? Select the ONE best answer:
Once a year.
Twice a year.
Every two years.
Every three years.
According to this module, what is a typical hull roughness value for a new-build ship? Select the ONE correct answer:
5 microns.
10 microns.
100 microns.
500 microns.
According to this module, what is a typical roughness value for a newly polished propeller? Select the ONE best answer:
5 microns.
10 microns.
100 microns.
500 microns.
According to this module, what speed loss would justify an average vessel docking? Select the ONE best answer:
0,1 knot.
0,5 knots.
1 knot.
2 knots.
An upgraded propeller gives a 10 % decrease in fuel consumption and engine modifications also give a 10 % decrease in fuel consumption. Calculate the overall fuel savings:
20 %.
10 %.
15 %.
19 %.
Choose the most fuel efficient option:
Large propeller and a slow revolving shaft.
Large propeller and a fast revolving shaft.
Small propeller and a slow revolving shaft.
Small propeller and a fast revolving shaft.
For a variable pitch propeller vessel what is the best pitch and propeller speed combination for optimum fuel consumption? Select the ONE correct answer:
High pitch, fast RPM.
High pitch, low RPM.
Low pitch, fast RPM.
Low pitch, low RPM.
For a vessel with a variable pitch propeller, what is the best way to adjust the speed of the ship? Select the ONE best answer:
Adjust load.
Adjust pitch.
Adjust RPM.
If there is low frequency vibration of the engine at low speed, what is the probable location of the problem? Select the ONE best answer:
The main propulsion shaft.
The main gearing.
The turbocharger bearings.
One of the engine cylinders.
In general terms, what is the most fuel efficient shape for a vessel? Select the ONE best answer:
Long and wide vessel.
Short and wide vessel.
Long and shallow vessel.
Long and slim vessel.
Mark the ONE statement that is TRUE:
SEEMP monitoring stage should be conducted twice a year.
SEEMP is mandatory only for new ships.
It’s possible to have a common or same SEEMP for all ships in the fleet.
SEEMP implementation is beneficial both financially and environmentally.
Select measures taken daily during an engine check:
Exhaust temperature.
Fuel consumption.
Maximum combustion pressure.
Scavenging air pressure.
Select modifications required for de-rating:
Ignition adjustment.
New injection nozzles.
Turbo-charger’s modification.
Valve system modification.
Select the measurements that should be recorded and monitored with special attention on board:
Time spent at sea.
Time spent at port.
Distance sailed.
Fuel consumption.
Select the most optimal way of adjusting the speed of a vessel which uses a variable pitch propeller at full sea speed:
Load adjustment.
RPM adjustment.
Pitch adjustment.
Select the speed loss that justifies docking:
1 knot.
2 knots.
0,5 knots.
0,1 knots.
Select the statements that are FALSE:
The minimum instrument requirements for better fuel saving are a fuel gauge and a pressure gauge.
Properly used instruments can reduce fuel consumption by nearly 50 %.
Data collected from different speed logs give different average speeds.
The best way to find the accurate speed is to use a measured mile landmark.
What does SEEMP stand for? Select the ONE correct answer:
Safety Executive Energy Management Plan.
Ship European Employment Management Plan.
Ship Energy Efficiency Management Plan.
Ship Energy Efficiency Market Place.
What is the main reason for de-rating the engine and changing the propeller? Select the ONE best answer:
The vessel is getting old.
Vibration problems.
Increasing the lifetime of the vessel.
A change in the service of the vessel.
Which ONE of the given options is the minimal instrumentation necessary to estimate fuel consumption? Select the ONE correct option:
Fuel gauge and speed log.
Fuel gauge and exhaust thermometer.
Fuel gauge and Doppler log.
Fuel gauge and radio navigation instrument.
Which ONE of these would benefit the most from a nozzle (tunnel) propeller? Select the ONE best answer:
A long distance cargo ship.
A slow speed ship with a high propeller load.
A fast coastal ships.
A vessel with a propeller, which rotates at high speed.
Which THREE of these measures increases the efficiency of steam heating? Select the THREE correct answers:
Make sure that the steam is still dry when it leaves the heaters.
Prevent leakage of steam from the pipework system.
Make sure that pipe insulation is fitted and in good condition.
Make sure that the steam leaves the heaters as condensate.
Which of these vessels would NOT benefit from using self-polishing antifouling? Select the ONE best answer:
Slow moving tug boats.
Ice operating vessels.
Riverboats.
Non-ferrous hull vessel.
Test about Ship Energy Efficiency
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