challenge: What was the intended purpose of the Lake class, including HMNZS Pukaki, when they were introduced?
  
  A. To conduct anti-piracy operations in the Pacific
  B. To provide support for the US Navy nuclear submarines
  C. To replace the Royal New Zealand Navy's (RNZN) existing fleet of destroyers
  D. To serve as patrol vessels for New Zealand's exclusive economic zone
  Answer: 