B. Edward Ewing, CEO of Norfolk-based United States Marine Repair (USMR), the largest non-nuclear ship repair, modernization and conversion company in the U.S., announced that Monty Dickinson will head USMR's West and Gulf Coast Shipyards. Dickinson joined USMR last January as president and general manager of the company's San Diego-based shipyard, Southwest Marine. In addition to managing that yard, Dickinson will spearhead leadership and operations of SWM's San Pedro, Calif. and Ingleside, Texas shipyards and San Francisco Drydock in the Bay area. Previously COO Alexander J. Krekich managed all shipyard operations. Under the new structure…