The seasonally strong bowling and billiards business helped Brunswick Corp. to offset a drop in operating earnings for the marine business in the 1st quarter, but Life Fitness improved its operating margin by 160 basis points to 6.6 percent as its sales went up by 5 percent to $134.5 million. As a group, Brunswick saw its net income decrease by 29 percent to $67.4 million on 5 percent lower turnover of $1.41 billion. Brunswick has divested its 4-year-old technology company, Brunswick New Technologies, which focused on GPS technology and portable navigation systems, generating annual sales of $317 million. A portion of the funds from the sale will be given to help Brunswick’s $500 million stock buyback program.