| |
| 2004-jul-29 | Ordered |  P148 HMNZS Otago | |
| 2005-dec | Laid down | P148 HMNZS Otago at Williamstown, Victoria, AU | |
| 2006-nov-18 | Launched | P148 HMNZS Otago | |
| 2007-oct-27 | Launched | P55 HMNZS Wellington | |
| 2010-may-10 | Commissioned | P148 HMNZS Otago | |
| 2010-jul-22 | Homeport | P148 HMNZS Otago Port Chambers, Dunedin | |
| 2010-sep-23 | Homeport | P55 HMNZS Wellington Wellington | |
| 2011-feb | Deployment | P148 HMNZS Otago  Christchurch Earthquake 2011 Deployed to assist in Christchurch earthquake relief operations | |
| 2016-feb-20 | Port Visit | P148 HMNZS Otago visit to Nelson for various RNZN 75th anniversary activities, until 24 Feb. | |
| 2016-apr-22 | Port Visit | P55 HMNZS Wellington visited Wellington, for ANZAC Day weekend | |
| 2016-sep-12 | Deployment | P148 HMNZS Otago first deployment for SH-2G (NZ3613/13) on Protector class OPV, during a resupply and seismicity support mission to Kermadec Islands, until 23 Sep | |
| 2016-nov-14 | Deployment | P55 HMNZS Wellington Kaikoura Earthquake relief operations joined HMNZS Canterbury as immediate relief vessel for Kaikoura, arrived 15 Nov | |
| 2016-nov-16 | Port Visit | P148 HMNZS Otago International Naval Review: RNZN 75th Anniversary entered Auckland as part of flotilla to celebrate 75th Anniversary of RNZN | |
| 2016-nov-19 | Deployment | P148 HMNZS Otago International Naval Review: RNZN 75th Anniversary HMNZS Otago was the Reviewing Vessel for the celebrations in Auckland Harbour. She carried the NZ Governor General, the Chief of the NZ Navy and senior officers from participating ships and other VIP visitors. | |
| 2016-nov-19 | Port Visit | P55 HMNZS Wellington International Naval Review: RNZN 75th Anniversary present at HMNZD Devonport for Fleet Review, after returning from first responder Earthquake Relief | |
| 2016-nov-27 | Deployment | P55 HMNZS Wellington departed Dunedin for 3 weeks to counter Illegal, Unreported or Unregulated (IUU) Fishing in the Southern Ocean. Returned to Auckland on 21 Dec. | |
| 2021-jul-12 | Deployment | P55 HMNZS Wellington departed Auckland to deliver COVID-19 vaccine supplies to Tokelau and Northern Cook Islands, on behalf of NZ Ministry of Health. | |
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Williamstown - 3nm SW of Melbourne
