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    Inside the Engine Room of Some of the Largest Cruise Ships

    The engine rooms of today that are the heart and soul of large cruise ships would be confusing and unrecognisable to the engineers and operators from the past. The big ships are still run on turbine power, but the similarities end there. Steam has been replaced by gas and diesel. The new fuel systems burn cleaner and don’t require the use of oil or coal like the steam engines of the past. Since oil has recently gone up significantly in price this also means the new ships are more economical.

    Queen Elizabeth II
    Queen Elizabeth II

    The Conversion of Queen Elizabeth II

    The QE2 was launched on September 20, 1967 as a steam powered cruise ship. Twenty years later she was converted to electric diesel to prolong her sea life. The engine room still looks the same as it did before the conversion. Only the fuel system and turbines have changed. With the conversion, QE2 sailed the seas for another twenty-two years. Don’t expect any cruise offers to travel on her this year, though. In 2010 she’ll be converted to a luxury hotel and remain stationary where she is currently docked in Dubai. A high end shopping and entertainment complex will be built around her.

    Safety of Life at Sea (SOLAS)

    The Safety of Life at Sea Act was actually passed in the United States back in 1914 in response to the Titanic disaster. In 1948 it was adopted by the International Maritime Organisation and is generally considered the current standard by which ships are measured for safety. The Act has been modified a number of times over the years with the most recent change going into effect in 2010. It is these guidelines that are primarily responsible for the change from steam to gas or electric turbine power. The engine rooms on a steam ship tended to be somewhat less safe than their diesel counterparts.

    2003 Boiler Explosion on the SS Norway

    SS Norway
    SS Norway

    The SS Norway was crucial in bringing international attention once again to the dangers of using super-heated steam to power ships. On May 25, 2003, one of the four boilers on the SS Norway exploded while she was docked at the Port of Miami, and luckily no passengers were hurt. The SS Norway was launched in 1962 (originally as the SS France) and was the longest cruise ship in the world (316 metres) until the RMS Queen Mary 2 (345 metres) was launched in 2004. While operating as the SS France she had eight boilers which provided 175,000 hp and gave her a cruising speed of 31 knots.

    The Engine Room of the Queen Mary 2

    Queen Mary 2
    Queen Mary 2

    The Queen Mary 2 runs on four 16-cylinder marine diesel engines and two gas turbines which put out a combined 67,200 kW at 514 rpm. This system is known as CODAG (Combined Diesel and Gas turbine), and has been common in naval vessels for some time. It’s considered the most economical for a ship when travelling at low speeds and has the power to help it attain high speeds quickly. Despite being 345 metres long with a displacement of 76,000 tons she is one of the most manoeuvrable cruise ships on the water today. The technology that went into the construction of the Queen Mary 2 is some of the very best ever used on a cruise ship.

    The Power of Oasis of the Seas

    Oasis of the Seas
    Oasis of the Seas

    Oasis of the Seas, at 360 metres long, is the largest cruise ship to ever be launched. Her sister ship, Allure of the Seas will be joining her in 2010, making the Queen Mary 2 the third largest cruise ship in the world. It is powered by six marine diesel engines that put out 97,020 kilowatts (130,110 hp) which is used both to propel the ship and provide electricity to its passengers and entertainment facilities. The Oasis is also the first cruise ship to utilise Azipods instead of long screws with propellers on them. Azipods are propellers mounted to tubes which turn, making rudders unnecessary.

    The Future of Cruise Ship Propulsion Systems

    When you enter the engine room of one of today’s large cruise ships you’ll be surprised at how clean and advanced they are. The technology that goes into constructing a cruise ship today is like nothing that has ever been used on sea-going vessels before. What comes next? With the current record holder at 360 metres it’s unlikely that the ships will get much bigger. Propulsion systems are more powerful and economical now but there’s no doubt that they can be improved. As the techniques used to build ships and the fuel systems utilized by the rest of the world advance there will unquestionably be changes in the cruise ship industry. The next few decades should be a new “Golden Age” for the 21st Century much like the 20’s and 30’s were in the 20th.

    About the author: Sarah Van Rensburg is an avid travel writer. She covers a wide range of travel-related topics but with a focus on cheap cruises.

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