This experience was a great birthday treat from my daughter and son- in- law. The two operators (Mark and Mark) were terrific "hosts". The trip was an educational experience, taking us past HMS Belfast at close quarters, and the Golden Hind in dry dock, at a steady rate of knots. Once past the Tower of London, the throttle was opened up and the speed increased 'to thrill'. On the return journey, various important buildings were pointed out to us with a little history thrown in. Altogether a wonderful experience.