Adventure Voyages offers you a memorable fast boat excursions in our purpose built 9 metre/30 foot Rigid Inflatable Boat (RIB). Our departures are from Mudeford Quay, Christchurch, Dorset BH23 4AB (Map). Mudeford is about 100 miles west of London, 25 miles west of Southampton and 5 miles east of Bournemouth. BAY BLAST. Enjoy a thrilling and exhilarating 20 minute "Blast around the Bay". Travelling at speeds of 30 knots (35 mph) for about 5 nautical miles. Minimum age 2 years.