Background
Tollefsen, Dag was born on March 3, 1963 in Tonsberg, Norway.
Tollefsen, Dag was born on March 3, 1963 in Tonsberg, Norway.
Candidate Science, University Oslo, 1988.
Scientist Norwegian Defense research Establishment, Norway, 1989-1997, senior scientist Norway, since 2000. Software engineer Kongsberg Defense and Aerospace, 1997-2000.
Member Acoustical Society of America (associate), Marine Technology Society.