Mass Measurements of the Heaviest Elements

Mass spectrometry is a well-established technique for nuclear structure studies in exotic nuclei far off stability. The Penning-trap mass spectrometer SHIP-TRAP at GSI has focused on mass measurements of the heaviest elements to map shell effects around N = 152. Several upgrades are presently ongoing to extend these measurements to heavier elements. A major step was the implementation of the phase-imaging technique (PI-ICR) that has been used for mass measurements of long-lived and stable nuclides in the context of neutrino physics. In this contribution recent achievements are briefly reviewed.