About Captain John's Crabhouse Capt. John's Crabhouse is a True Southern Maryland Style Crabhouse. Established by Capt John Shymansky in 1963. Family owned and operated for over 50 years. A true southern Maryland Crabhouse with a family friendly atmosphere. Specializing in Maryland Steamed Crabs, freshly prepared crab cakes, fish, crab-legs, oysters, scallops, and shrimp. We use zero trans fat oil for our fried seafood. Full menu includes seafood, steak & chicken and children's menu, full salad bar. All you can eat specials priced daily. Open 7 days a week year round breakfast, lunch, dinner. Enjoy great seafood on our open air deck by the water.