The Board of Directors of Royal Caribbean Cruises Ltd. (NYSE, OSE: RCL)&nbsp;has declared a quarterly dividend of $0.15 per share payable on June 20, 2008, to shareholders of record at the close of business on June 6, 2008. &nbsp; <br />&nbsp; <br />This is the 59th consecutive quarter Royal Caribbean&rsquo;s Board of Directors has voted to declare a dividend to shareholders. 