FORT LAUDERDALE, Fla., May 09, 2018 (GLOBE NEWSWIRE) -- SEACOR Holdings Inc.  (NYSE:CKH) announced today that it entered into exchange agreements with certain beneficial owners of the Company’s outstanding 3.00% convertible senior notes due 2028 pursuant to which such Investors will exchange approximately $117.8 million in aggregate principal amount of the Company’s Old Notes for approximately $117.8 million in aggregate principal amount of its 3.25% convertible senior notes due 2030.