Bruntons NPT Propellers

Achieving improved efficiency, slow steaming and high thrust at low draft with Stone Marine’s “New Profile Technology”

NPT propellers offer:

  • 2-4% efficiency gain
  • smaller optimum diameter
  • smaller blade surface
  • significant weight & inertia reduction
  • lower pressure pulses
  • same cost as conventional propeller
How NPT propellers work

  • reduced pressure peak on section
  • blade surface area reduced
  • viscous drag reduced = improved efficiency

see World Maritime News The Naval Architect Seahorse 35000 references as of May 2014 Marinelog: NPT Propeller deliver impressive results