Thunderbolt Speedboat RidesOperating from Weymouth, Dorset. Real value fun for all the family. We run from opposite the Kings Arms pub on the harbourside.£6 for adults£4.50 for Children (under 15)Family Offer- 1 adult, 1 child- £9.50This is a 20 minute ride out around the bay at high speed, and is not for the faint-hearted!