Seven men of Harvard will be among the members of the U.S. national crew team when the team defends its heavyweight and lightweight world champion titles at Nottingham, England, next month.

Three members of Harvard's heavyweight boat, three from the lights, and one four-man rower joined the roster last week, after successfully bearing up through two and one half weeks of trials at Dartmouth.

Seniors Dick Cashin and AI Shealy and Dave Weinberg '74 will row for the heavies; juniors Steven Heller, Lief Soderberg, and Nod Reynolds for the' lights; and Dave Fellows '74 for the fourman boat.

Senior Tiff Wood is still competing for a place in the four-man boat.

Both the heavies and the lights took first place at the World Championships last year, and Harvard Coach Harry Parker said yesterday the team has "an excellent chance" of repeating that performance at Nottingham.