Lawrence M. Lucas, 65, a design engineer with the David Taylor Naval Ship Research & Development Center, died April 14 at Frederick Memorial Hospital in Frederick, Md., after a heart attack. He lived in Woodsboro, Md.

Mr. Lucas was born in Philipsburg, Pa., and graduated from Pennsylvania State University. He served in the Army in the Pacific during World War II. He was an engineer with Pennsylvania Power Co. before moving to the Washington area in the mid-1950s to join the Department of Agriculture.

While at Agriculture, Mr. Lucas participated in the "Beltsville Turkey" project at the Agricultural Reseach Center. The project was intended to increase the proportion of white meat in turkeys.

He went to work for the Department of the Navy in the mid-1970s and worked on a design team for all mechanical systems at the Bethesda Naval Medical Center. He had been assigned to the David Taylor facility for the last three years.

Mr. Lucas is survived by his wife, Anne Cruse Lucas of Woodsboro; two children, Michael W. Lucas and Rebecca A. Eide, both of Woodbridge, Va.; two brothers, Dr. George B., of Raleigh, N.C., and Russell M., of Philipsburg; three sisters, Dr. Jane L. DeGrummund of Baton Rouge, La., Mary Catherine Moore of Greensburg, Pa., and Alzene O. Lucas of Philipsburg, and two grandchildren.