Just one look at the tug Sea Reliance and its companion barge 550-1 shows that Marine Transport Corp., a Crowley Maritime Corporation company, spared no effort to make this ATB (articulated tug barge) and barge a state-of-the-art workboat. Its twin Caterpillar 12-cylinder diesel engines put out a combined total of 9,280 hp allowing for a sustained speed of 12-knots with a full load of 155,000 barrels of petroleum. The barge's cargo-handling systems, with inert gas blanketing and hydraulics, are the equal of most tankers. The technology is matched only by the accommodations and amenities, including single staterooms and private showers, which every crewmember greatly appreciates.