NAVY - Royal Navy of Oman
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| able seaman | leading seaman | petty officer |
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| chief petty officer | warrant officer 2 | warrant officer 1 (NCO) |
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| midshipmann | sub lieutenant 2 | sub lieutenant 1 | lieutenant |
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| lieutenant commander | commander | captain | commodore |
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| rear admiral | vice admiral | ||
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| admiral | admiral of the fleet | ||