Just like renting a car, when chartering a boat fuel is an additional charge. Generally fuel consumption is calculated by approximating the number of hours the engines are running and how much fuel they use per hour. If a boat is driven at top speed for the entire charter, it would use far more fuel than the cost of the charter itself, many times over. Each boat has an estimated fuel consumption value listed on the boat specification page of our website. We advise discussing any fuel concerns and agreeing a fuel budget with us or your captain before setting off and before going off the agreed itinerary.