This has been explained 9million times on here.
The high rate is due to the fact that the UK has so many crimes classified as violent, which are crimes of theft or other classifications in other countries.
The UK has at least 28 different crimes classed as violent.
Taking a ship out in dangerous weather against the crew’s wishes is classed as a minor assault charge here. I kid you not.
Okay...so it’s only three times as violent as the US!