Functionality for Charter Companies (users with login): The YachtCheck App allows yacht charter operators collecting reviews from their charter clients after they return from their cruise. The operator logs in with his YachtCheck credentials and selects the yacht and relevant charter party. After selection, the mobile device can be handed over to the charter client that will make the ratings and comments for the yacht, the operator and the cruising destination. The customer ratings can be made offline if the user of the charter company was once logged in before in online mode. The reviews will be verified and approved by the YachtCheck team. After the approval by the YachtCheck, the reviews will be published on the internet and in the YachtCheck App.