(1) A Ceylon ship shall hoist the Ceylon national ensign-
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| (a) on a signal being made to the ship to such effect by a ship of the Royal Ceylon Navy or by a ship in the service of the Government and carrying out the provisions of this Act; | | |
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| (b) on entering or leaving any Ceylon or foreign port; | | |
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| (c) when passing a warship of the Royal Ceylon Navy or any foreign navy; or | | |
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| (d) while in a Ceylon port, from sunrise to sunset. | | |
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