
Gebr. Van Wensveen in Werkendam has recently started with the fabrication of a large amount of aluminium  "bow thrusters" ordered by Damen Shipyards. The qualification of the welding procedures and welders was witnessed by Bureau Veritas and found acceptable acc. EN ISO 15614-2 & BV Rules for shipping.  At this moment, they have started with the production.
  
  Image on the right: Weld  instruction (pWPS)
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Hydrosta thruster with aluminum  sterntube.
  
  

  Test plate.                                                                               
  Welder in action.
  
  
  
  
  Macro etch.