She is onboard the £3.2bn warship, now the flagship of the Royal Navy, before the vessel deploys to the Far East with the Carrier Strike Group this evening.
Here is the head of state’s visit in pictures.
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. Queen Elizabeth II talks to military personnel during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture date: Saturday May 22, 2021. PA Photo. See PA story ROYAL Carrier. Photo credit should read: Steve Parsons/PA Wire
Queen Elizabeth II talks to military personnel during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture: Steve Parsons/PA Wire Photo: Steve Parsons

. HM the Queen's helicopter on HMS Queen Elizabeth. Picture: Alison Treacher
HM the Queen's helicopter on HMS Queen Elizabeth. Picture: Alison Treacher Photo: Alison Treacher

. Queen Elizabeth II during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture date: Saturday May 22, 2021. PA Photo. See PA story ROYAL Carrier. Photo credit should read: Steve Parsons/PA Wire
Queen Elizabeth II during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture: Steve Parsons/PA Wire Photo: Steve Parsons

. Queen Elizabeth II meeting personnel during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture date: Saturday May 22, 2021. PA Photo. See PA story ROYAL Carrier. Photo credit should read: Steve Parsons/PA Wire
Queen Elizabeth II meeting personnel during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture: Steve Parsons/PA Wire Photo: Steve Parsons

. Queen Elizabeth II during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture date: Saturday May 22, 2021. PA Photo. See PA story ROYAL Carrier. Photo credit should read: Steve Parsons/PA Wire
Queen Elizabeth II during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture: Steve Parsons/PA Wire Photo: Steve Parsons

1. HM the Queen's helicopter on HMS Queen Elizabeth. Picture: Alison Treacher
HM the Queen's helicopter on HMS Queen Elizabeth. Picture: Alison Treacher Photo: Alison Treacher

2. Queen Elizabeth II during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture date: Saturday May 22, 2021. PA Photo. See PA story ROYAL Carrier. Photo credit should read: Steve Parsons/PA Wire
Queen Elizabeth II during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture: Steve Parsons/PA Wire Photo: Steve Parsons

3. Queen Elizabeth II meeting personnel during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture date: Saturday May 22, 2021. PA Photo. See PA story ROYAL Carrier. Photo credit should read: Steve Parsons/PA Wire
Queen Elizabeth II meeting personnel during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture: Steve Parsons/PA Wire Photo: Steve Parsons

4. Queen Elizabeth II during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture date: Saturday May 22, 2021. PA Photo. See PA story ROYAL Carrier. Photo credit should read: Steve Parsons/PA Wire
Queen Elizabeth II during a visit to HMS Queen Elizabeth at HM Naval Base, Portsmouth, ahead of the ship's maiden deployment. The visit comes as HMS Queen Elizabeth prepares to lead the UK Carrier Strike Group on a 28-week operational deployment travelling over 26,000 nautical miles from the Mediterranean to the Philippine Sea. Picture: Steve Parsons/PA Wire Photo: Steve Parsons