* APA (or cash on board): Amount advanced by the customer to cover the expenses of fuel and berths, and to refuel the boat according to the wishes of the latter. At the end of the charter, the remaining amount will be returned to the client with proof of expenses. In the event that the APA is not sufficient (new destinations requested by the client, great wines, jet ski rentals, etc.) an additional advance will be requested from the client by the captain, during the charter.