Bollinger recently gave new life to an old boat, the 150-ft. Guardian, originally named Gale B., which was built by Southern Shipyard in 1963. It was owned by Midland Enterprises and was part of a tug/barge unit with the hopper barge Martha B. Midland sold the barge to Moran about three years ago and the tug was on the market when it was acquired by Velvet Maritime, LLC. "It was in good shape with a good purchase price," said Andre Ledoux, president of Velvet Maritime. "It had marketable power that we wanted to upgrade to meet new regulatory requirements, practically new Lufkin gears, a good Detroit Diesel auxiliary engine package, good Markey deck equipment…