DGS Delicatessen owners Nick and David Wiseman are trading matzo for mussels at their latest project: Whaley’s, a 66-seat seafood venture in the Navy Yard/Capitol Riverfront neighborhood. The eatery, fittingly named after an 18th century commodore of the Maryland navy, will open for dinner service starting on Monday, May 16 (lunch and brunch will follow). […]