Parts of a Ship

VOCABULARY

1. Smokestack: is a chimney on a ship used to expel boiler steam and smoke or engine exhaust. The primary purpose of a ship’s funnel(s) is to lift the exhaust gases clear of the deck, in order not to foul the ship’s structure or decks, and to avoid impairing the ability of the crew to carry out their duties. In steam ships the funnels also served to help induce a convection draught through the boilers.

2. Stern:is the rear or aft-most part of a ship or boat, technically defined as the area built up over the sternpost, extending upwards from the counter rail to the taffrail. The stern lies opposite of the bow, the foremost part of a ship. Originally, the term only referred to the aft port section of the ship, but eventually came to refer to the entire back of a vessel. The stern end of a ship is indicated with a white navigation light at night.

3. Propeller: is a type of fan that transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blade, and a fluid (such as air or water) is accelerated behind the blade. Propeller dynamics can be modelled by both Bernoulli’s principle and Newton’s third law. A propeller is often colloquially known as a screw.

4. Bridge:is the room or platform from which the ship can be commanded. When a ship is underway the bridge is manned by an OOW (officer of the watch) aided usually by an AB (able seaman) acting as lookout. During critical manoeuvres the captain will be on the bridge supported, perhaps, by an OOW as an extra set of hands, an AB on the wheel and sometimes a pilot if required.

5. Portside: is the left side of the boat. At night, the port side of a vessel is indicated with a red navigation light and the starboard side with a green one. The reason that the ships be given to the two sides different names to the right and left is to avoid confusion, since the crew can move freely back and forth, and the crewman who looks back on the right referring speak in fact, to the left, and vice versa. When called the sides as described above there is no confusion.

6. Linguee:is referred to the submerged surface of a vessel (below the surface float), corresponding to the fairing. The part of the helmet permanently, and maximum permissible load is submerged. Normally, it is distinguished with a red or ocher.

7. Anchor: is a device, normally made of metal that is used to connect a vessel to the bed of a body of water to prevent the vessel from drifting due to wind or current. Anchors can either be temporary or permanent. A permanent anchor is used in the creation of a mooring, and is rarely moved; a specialist service is normally needed to move or maintain it. Vessels carry one or more temporary anchors which may be of different designs and weights.

8. Bulbous bow: s a protruding bulb at the bow (or front) of a ship just below the waterline. The bulb modifies the way the water flows around the hull, reducing drag and thus increasing speed, range, fuel efficiency, and stability. Large ships with bulbous bows generally have twelve to fifteen percent better fuel efficiency than similar vessels without them.

9. Bow:is a nautical term that refers to the forward part of the hull of a ship or boat, the point that is most forward when the vessel is underway. Both of the adjectives fore and forward mean towards the bow. The other end of the boat is called the stern. The bow is designed to reduce the resistance of the hull cutting through water and should be tall enough to prevent water from easily washing over the top of it.

10. Tack of a sail: The tack is the lower corner of the sail’s leading edge. On a sloop rigged sailboat, the mainsail tack is connected to the mast and the boom at the gooseneck. On the same boat, a foresail tack is clipped to the deck and forestay.

11. Deck:is a permanent covering over a compartment or a hull of a ship. On a ship, the primary or upper deck is the horizontal structure which forms the ‘roof’ for the hull, which both strengthens the hull and serves as the primary working surface. Vessels often have more than one level both within the hull and in the superstructure above the primary deck which are similar to the floors of a multi-story building, and which are also referred to as decks, as are specific compartments and decks built over specific areas of the superstructure.

12. Dead rise:it’s the total gross weight of the vessel (structure’s weight plus cargo, (expressed in water weight displacement, normally tons.) Is considered as the rise of the bottom from baseline to molded breadth measureed amidships. Also called “rise of floor” or “rise of bottom”.

13. Superstructure: is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. The size of the superstructure has a great influence on the mobility of the vessels. They are designed in a manner, so that, they add value and hinder the speed and mobility in the least. The superstructure is mostly designed in fashion as well.

 

Citar este texto en formato APA: _______. (2014). WEBSCOLAR. Parts of a Ship. https://www.webscolar.com/parts-of-a-ship. Fecha de consulta: 22 de noviembre de 2024.