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weight limit. Neither appears to have had any idea what the other was doing. And they are but two parts of a maritime system that failed passengers April 16 when the ferry sank, leaving more than 300 people missing or dead.
• The disaster has exposed enormous safety gaps in South Korea's monitoring of domestic passenger ships, which is in some ways less rigorous than its rules for ships that handle only cargo. Collectively, the country's regulators held more than enough information to conclude that the Sewol was routinely overloaded, but because they did not share that data and were not required to do so, it was practically useless.
• The Korean Register of Shipping examined the Sewol early last year as it was being redesigned to handle more passengers. The register slashed the ship's cargo capacity by more than half, to 987 tons, and said the vessel needed to carry more than 2,000 tons of water to stay balanced.
• But the register gave its report only to the ship owner, Chonghaejin Marine Co. Ltd. Neither the coast guard nor the Korean Shipping Association, which regulates and oversees departures and arrivals of domestic passenger ships, appear to have had any knowledge of the new limit before the disaster.
• ___

• COLUMBIA, S.C. (AP) -- Here's how Sen. Lindsey Graham is navigating through six challengers in South Carolina's Republican primary: goodwill, shrewd politics and nearly $7 million in campaign cash.
• Rep. Mick Mulvaney was thought to be a credible challenger in the June 10 primary, until Graham inspired House leaders to give Mulvaney a seat on the House Financial Services Committee. Mulvaney opted against challenging the two-term senator.
• A hacking episode resulted in the theft of South Carolina taxpayers' personal information and a public relations problem for Gov. Nikki Haley, also up for re-election this year. Graham advised her on the situation, and now she has better poll numbers than he does.
• Not long ago, Graham looked vulnerable to a primary challenge from conservatives offended by his bipartisan dealmaking and votes for President Barack Obama's Supreme Court nominees. Tea party challenges ousted GOP incumbents in the past two elections, and, some believe, prevented the party from regaining the Senate.
• But Graham's power and shrewdness, not to mention the intimidating $7 million

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