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Marine steam boilers are utilized in ships for steam generation to drive the turbines. Steam generated through boilers is used to drive ship’s main engine as well as auxiliary power generators. Marine steam boilers are also used forpumping, heating, cooling, cleaning and hot-water for the accommodation. Primarily all marine steam boilers are similar in operation but usually differ by the number of consisting drums. Drums are the horizontal pressure vessels with domed ends. Various kind of boilers have two drums or three drums depending on the manufacturer. Drums are connected by water tubes which expand and contract due to thermal effects. Size of tubes also varies depending on the manufacturer.<br>
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