American superstar Katie Ledecky never stops taking new medals.

She has seven Olympic golds on her merit list and now 17 World Cup golds.

The time of 15.30,15 was her sixth fastest in the distance.

But she was not the reigning champion despite three golds earlier in her distance career.

Now she is again on the throne.

It was also impressive that the names Katie Grimes fixed a double for the USA, only 16 years old.

Third came Lani Pallister from Australia.

- It was amazing.

We succeeded with a double last year, so now we will make it a tradition, she says in the victory interview.