Original sentence: Its website  states that "More than 10 million children have visited the ships and experienced the unique environment on board for themselves", that "Around 10,000 young people have been trained on board for future life and service", and that "Hundreds of tonnes of books have been donated"
Edited sentence: Its website  states that "More than 10 million children have visited the ships and experienced the unique environment on board for themselves", that "Around 10,000 young people have been trained on board for future life and service", and makes the claim that "Hundreds of tonnes of books have been donated"