The boat was really nicely equiped for these tours. We had access to the top deck (behind me and to my left), the inside cabin, and the main deck foreward (ie, here). There was plenty of room for 8 - 12 people to be outside on the front deck and have a fine view. The tour company even provided many pairs of stout binoculars for anyone's use.
(Click the image to view a larger version.)