U.S. kicks off Taiwan submarine competition Wednesday December 18, 6:47 pm ET By Jim Wolf WASHINGTON, Dec 18 (Reuters) - The U.S. Navy on Wednesday kicked off a potential $4.5 billion competition to help Taiwan buy up to eight conventional submarines, despite strong opposition from China. ADVERTISEMENT The Naval Sea Systems Command, which designs, builds and acquires ships for the U.S. Navy, outlined its plans for the diesel-electric submarines at a two-day session attended by four top U.S. defense contractors. The briefing for industry wound up Wednesday. The competition will be limited to General Dynamics Corp. (NYSE:GD - News), Northrop...