We booked this harbour tour as part of a combo package with a carriage tour of Charleston.
We walked from the carriage tour location to the harbour which was about one mile. The boat tour was very informative, so much history to hear about and see. This tour was 90 minutes long and we sat at the bow of the boat on the outside. The weather wasn't so great, but there was plenty of seating inside as well. There were even a couple of dolphins escorting us for a while.