Tuesday, February 22, 2011

Oasis of the Seas versus Titanic Funnels

Oasis of the Seas cruise ship does not have funnels as many as RMS Titanic. In RMS Titanic, we can see that there are four funnels although the fourth one was only built for aesthetic reason. These funnels were the exhaust pipe for fumes and smokes that are released when boilers in the Titanic were fired to power the ship. The height of the funnels had to be high enough to discharge the fumes so that the ship's superstructure and hull as well as passengers walking on upper decks will not be covered with soot. Coal was the fuel for the ship. When coal was burnt it creates a lot of black smoke that was not good for passengers' health. The addition of fourth funnel near the bridge of the RMS Titanic was done to create an impression of speed to the passengers who are willing to cross the Atlantic Ocean. Actually the fourth funnel did not have any function at all. It even exposed the steamer additional air resistance.

Royal Mail Steamer RMS Titanic
RMS Titanic

Oasis of the Seas cruise vessel
Oasis of the Seas Cruise Ship
In the cruise ship Oasis of the Seas, the number of funnels is two. They discharge smoke from the marine internal combustion engines in the lowest deck of the ship. In most merchant ships, funnels are placed at the aft area of the top deck. The main reason for this layout is to release smokes and fumes without effecting the passengers and ship's superstructure. Because the superstructure of the cruise ship is quite high, Oasis of the Seas rooms can be covered with fumes if the funnels are not tall enough.
Some warships do not have funnels installed at the top deck of the superstructures. Instead, they installed the exhaust pipes at both sides of the ship's hull below the waterline. This submerged funnel is  constructed to protect the warships from becoming the target of missiles that are equipped with heat finding sensors. The construction of this type of funnel is a little bit complicated due to the addition of one way valves that allow fumes to go out of the pipes but do not allow sea water to enter the ship's hull. by Charles Roring

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