#1

Question 1

Propulsion System

Answer 1

• Diesel engines
• Steam turbines.
• Gas turbines
• Diesel Electric

Question 2

Diesel Engines

Answer 2

• reciprocating internal combustion engine
• recirpocating movement of the pistons within the liners are converted into rotary motion
• Internal combustion=compressed air + fuel
• consume less fuel and more efficient than steam turbine
• 100rpm
• Two stroke engine
• directly connected to propeller

Question 3

Steam Turbine

Answer 3

• Rotary Machine
• high pressure steam to turn turbine
• steam provided by boilers
• turns at very high speed (10,000-12,000 rpm)
• not directly connected to propeller
• require reduction gear
• VLCC, LNG ships

Question 4

Gas Turbine

Answer 4

• rotary engine, similar to steam
• Compressor, combustion chamber, turbine
• Compressor: provides compressed air which is then heated up
• Combustion chamber: compressed air + gas
• Increase efficiency by using heat from exhaust
• Connected to propeller using reduction gear

Question 5

Diesel Electric Propulsion

Answer 5

1. connected to electrical generator creating electricity to power electric motors
2. electric motor drives propeller shaft that turn propeller to move the ship
3. Cruise ship

Question 6

Common Auxiliaries
♦ Generators
♦ Boilers
♦ Fuel Oil Pumps
♦ Lub Oil Pumps
♦ Cooling pumps
♦ Bilge Pumps
♦ Steering gear
♦ Sewage Plant
♦ FW Drinking
♦ Cargo Handling
♦ Mooring
♦ Fire Fighting
♦ Refrigeration
♦ Air Conditioning
♦ Lifeboat
♦ Compressed air
♦ Automation

Answer 6

♦ Generators - electrical power.
♦ Boilers - steam for heating.
♦ Fuel Oil Pumps - transfer fuel oil for engine consumption.
♦ Lub Oil Pumps - cool and lubricate moving parts.
♦ Cooling pumps - supply cooling water.
♦ Bilge Pumps - remove ‘waste’ oily water
♦ Steering gear - manoeuvre ship
♦ Sewage Plant - treat human waste
♦ FW Drinking - provisions for drinking and bathing
♦ Cargo Handling - winches, cranes
♦ 1 Mooring - winches, capstans and windlasses
♦ Fire Fighting - fixed and portable fire fighting systems
♦ Refrigeration - storage of food
♦ Air Conditioning - heating and cooling to ship staff
♦ Lifeboat - lifeboat, davits, winches etc
♦ Compressed air - provide air for starting engines and daily uses
♦ Automation - all automated and control equipments