Enjoy the experience of sailing on board the Eco Slim, the largest Ecological passenger catamaran in EuropeBCNaval Tours gives you the chance to discover the latest in marine technology.Driven by wind and solar power, the Eco Slim glides on the water using the minimum amount of energy.Enjoy sailing around the old harbour, the Port Vell, and view Barcelona’s seafront on board this silent, comfortable, light and environmentally friendly vessel.