Overseas Shipholding Group is now a wholly-owned subsidiary of Seattle-based Saltchuk Resources, Inc. Saltchuk announced July 10 that it has completed the acquisition of Florida-based OSG for about $950 million, making the provider of liquid bulk transportation services for crude oil and petroleum Saltchuk’s seventh business unit. “With OSG, Saltchuk now numbers more than 8,500 people,” Saltchuk Chairman Mark Tabbutt said. “As with our other businesses, OSG will remain standalone and independently managed. We look forward to working alongside the OSG team as we move forward together.” OSG’s presence under the Saltchuk umbrella adds energy shipping to the company’s business…