I don't believe there has ever been a member of the monarchy who has served or sailed on HMS submarines, however there have been a number of occasions that members of the Royal Family have visited and been onboard a sub. The most prominent figure was princess Diana who went to the naming ceremony of HMS Vanguard.
James the first was the British monarch who was against smoking and wrote a tract on the great harm that it did.
King George V
The jubilee name for 70 years on the throne is the "Platinum Jubilee." This milestone celebrates a monarch's seven decades of reign and is a significant occasion in the history of the British monarchy, marked by various festivities and events. Queen Elizabeth II celebrated her Platinum Jubilee in 2022, making her the first British monarch to reach this remarkable anniversary.
Team Magma will not appear in the submarine but you will see them get away with it the first time. The second time you see the submarine, you have to dive to the seafloor cavern to go challenge Maxie.
Yes, James I of England was a Stuart. He was the first monarch of the Stuart dynasty to rule England, ascending to the throne in 1603 after the death of Elizabeth I. He was previously James VI of Scotland, uniting the crowns of England and Scotland. His reign marked the beginning of a new era in British history.
Queen Victoria (on 13th June 1842 according to Wikipedia).
submarine
James the first was the British monarch who was against smoking and wrote a tract on the great harm that it did.
He made the first radio speech by a Monarch in 1932.
corn
Charles II
King George V
Harry S. Truman
I learnt this 8 years ago from a facts card and I've never forgotten it: Queen Victoria (on 13th June 1842 according to Wikipedia).
Queen Elizabeth II
The submarine you are thinking about was the USS Nautilus. It was the world's first nuclear powered submarine and commissioned into the US Navy in 1955
Queen Victoria