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Machinery. Exercise 3. Which ship terms are defined below?. bow, stern, funnel, mainmast, stem, sternpost, shipboard crane, double bottom, engine room, rudder, bulbous bow, bow thruster, hold No. 3, hatchcover, free-fall lifeboat, forecastle, poop deck,
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Machinery
Three principal types of machinery installation are to be found at sea today. Their individual characteristics change with technological advances and improvements and economic factors such as the change in oil prices. The three layouts involve the ship’s propulsion machinery using direct-coupled slow-speed diesel engines (the main engine), medium-speed diesels with a gearbox, and the steam turbine with a gearbox drive to the propeller. A propeller, in order to operate efficiently, must rotate at a relatively low speed. Thus, regardless of the rotational speed of the prime mover, the propeller shaft must rotate at about 80 to 100 rev/min. The slow-speed diesel engine rotates at this low speed and the crankshaft is thus directly coupled to the propeller shafting. The medium-speed diesel engine operates in the range 250—750 rev/min and cannot therefore be directly coupled to the propeller shaft. A gearbox is used to provide a low-speed drive for the propeller shaft. The steam turbine rotates at a very high speed, in the order of 6000 rev/min. Again, a gearbox must be used to provide a low-speed drive for the propeller shaft. A
Exercise 1. Find the parts of the reading text which provide answers to the following questions:
1. What do the two main parts of the ship include?
2. What are the two extreme ends of a ship called?
3. Define the location and function of the following ship parts: bow, stern, funnel, mainmast, stem, sternpost, shipboard crane, double bottom, engine room, rudder, bulbous bow, bow thruster, hatchcover, free-fall lifeboat, forecastle, poop deck, bridge, wheelhouse, forepeak, afterpeak
4. Which types of machinery are housed in the engine room?
5. Where are the anchors and windlasses placed?
Exercise 2. Complete the following sentences:
1. The hull includes both _______________. 2. The ship's machinery includes ______________. 3. When moving bow first, the ship _________________ and she _________________ when she moves stern first. 4. The midship portion of the ship is situated between ________. 5. The beam is _______________. 6. The rudder is designed to ___________________. 7. The bow thruster gives the ship _______________. 8. Modern ship holds are equipped with mechanically operated hatch covers to _____________. 9. The use of the bulbous bow is to __________________.
Exercise 3. Which ship terms are defined below?
1. ____________: the body of the ship.
2. ____________: the large hinged plate at the stern of the ship which controls the ships direction.
3. _____________: space inside the ship for carrying the cargo.
4. ____________: a part of the ship which drives the ship through the water.
5. ____________: an opening in the deck through which the cargo is lowered into and lifted from the hold.
6. ____________: the measurement of the ship's largest width.
7. ____________: fore and after end of the ship's hull.
Exercise 4. Complete the following text with the corresponding ship terms:
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The forward end of the ship is called the 1. _____________ the after end is the 2. _____________, and halfway between the two is 3. _____________. The 4. _____________ of the ship is the distance from the port to the starboard side of the ship. The 5. _____________ or body of the ship includes the outer skin or shell and all members and parts which hold the ship together, divide it into 6. _____________ and give it strength and rigidity.
Exercise 5. Write down the labels indicating the parts of the ship of the ship following the arrows from the bow to the stern:
catwalk
Exercise 6. Indicate the parts of the ship below by drawing an arrow to the relevant position:
bow, stern, funnel, mainmast, stem, sternpost, shipboard crane, double bottom, engine room, rudder, bulbous bow, bow thruster, hold No. 3, hatchcover, free-fall lifeboat, forecastle, poop deck, poop deck No. 3, bridge, wheelhouse, forepeak, afterpeak
Bow thruster
Exercise 7. Write down the terms relating to the arrows showing points of orientation on board an around the ship
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