here's a few photos of things right up close to the lighthouse, taken while looking down from the viewing deck, more properly known as the observation deck I suppose.
In the top left hand corner the lettering reads The Port.
These flags are attached to the lighthouse.
This is the biggest of the tour boats and goes way out by the top end of Torrens Island to an area known as Dolphin Sanctuary, where dolphins can be spotted if you're lucky.
This is the one I've been on, but sadly I didn't see any dolphins that day. Since I didn't own a camera back then it didn't really matter. I'll be going out again.