One of the questions that is often put to the crew on a cruise ship is how does the ship get electricity? The answer is in this video!
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Chapters:
00:00 Where do cruise ships get their electricity?
00:42 Electricity uses on cruise ships
02:11 Diesel Electric Engines
02:22 Direct Drive Systems
02:39 Reciprocating Systems
02:56 Electricity on Titanic
03:33 Indirect Drive
04:11 Turbo Electric and Gas Turbines
04:42 Hybrid Plant on QM2
05:12 LNG powered cruise ships
05:36 Nuclear Powered Passenger Ships
06:14 Next Gen Sail
07:27 Cold Ironing
07:57 Outro
08:11 Outtakes
About this video:
A ship the size of Norwegian Spirit is estimated to use as much electricity as a small city. And while battery technology is improving at a great rate, you’d still struggle to find one that could allow for longer distance voyages while still powering a city, and fitting on a ship, with space left over for all of the passenger and storage spaces that are needed on board.
The most common power system on ships at the moment is diesel-electric. This means that diesel engines on board the ship produce electricity. This electricity is then used to power the different services on board. This includes powering the propellers or pods. This is a form of indirect drive, where the engines are not directly attached to the propellers to drive the ship.
This is the opposite of the reciprocating engines of old. The old reciprocating engines, and even the first steam turbines were direct drive. This meant that the engines were attached directly to the propeller shaft, or paddle wheel in the older ships, and as the pistons turned, this turned the propeller or paddle wheel shaft.
Direct drive engines are the simplest way of powering a ship, but they aren’t the most effective. It was discovered in some of the earlier steam turbine ships, that the speed at which the propeller was most efficient and the speed at which the turbine were most efficient, were different. This led to serious vibration issues when the ship was run at speed.
Indirect drive engines overcome this problem. Though they are a little more complex and require more machinery to convert the electricity to allow it to run the ship, they are more efficient overall. They allow both the engines and the propellers to run at their most efficient speed by separating the process of creating power from the process of using that power.
Image Support:
Iona and Aida images:
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Pexels:
Lightbulb Illuminating Video by Free Videos: https://www.pexels.com/video/light-bulb-going-on-and-off-853772/
Long Extension Cord Video by Kindel Media: https://www.pexels.com/video/close-up-footage-of-a-person-holding-an-electric-car-charger-9790002/
Wind Farm Video by Anthony 📷📹🙂: https://www.pexels.com/video/wind-turbines-1508628/
Battery Video by Athena: https://www.pexels.com/video/a-battery-charger-for-rechargeable-batteries-3770190/
Containers, Video by Kelly: https://www.pexels.com/video/a-forklift-truck-transferring-a-cargo-container-6618335/
Commons:
Reciprocating Engine, Emoscopes CC BY SA 3.0: https://tinyurl.com/249yp3h9
Popular Science 1918, Public Domain: https://tinyurl.com/2cs3k2dw
Reciprocating Engine, Public Domain: https://tinyurl.com/yckdnceu
Titanic, Sinking. Public Domain: https://tinyurl.com/bdkhk8m4
Olympic and Titanic, Public Domain: https://tinyurl.com/2s3828bj
Lusitania, New York 1907, Library of Congress, Public Domain: https://tinyurl.com/2s3rr7dc
Lusitania at speed, Public Domain: https://tinyurl.com/4p99ep63
Canberra Engines, Dashers, CC.0: https://tinyurl.com/58jtpphe
NV Savannah, US Government, Public Domain: https://tinyurl.com/52hswvjs
Savannah Engines, Acroterion CC BY SA 3.0: https://tinyurl.com/2ysupuaa
Savannah Control Room, Acroterion CC BY SA 3.0: https://tinyurl.com/nuclearship
Savannah, Acroterion CC BY SA 3.0: https://tinyurl.com/rm7zn2vp
Cold Ironing, Pawanexh Kohli, CC BY SA 3.0 https://tinyurl.com/2uaxvdwv
Tags: #cruiseship #cruisenews #cruiseline #cruising #cruiseships #engineroom #engine #electricity #QE2 #QM2 #Titanic
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