The goal is not to bring every app for the iPad/iPhone into the spot light, but Jeff Seigel does a great job of showing off a few features of Active Captain through a series of screen shots. If you are curious as to what value such a device could have, this is worth a look.
Here are some screen shots of the iPad application to be released in a few days that fully supports all of ActiveCaptain's data offline. No internet connection is needed to view all of the marinas, anchorages, bridges, locks, boat ramps, etc., along with all of the reviews. It works incredibly well and even rotates the chart as your boat is turning.
On a related note, the tablet game is starting to heat up (HP with WebOS, and Android tablets are popping up!). With a wide variety of price points, features, and operating systems, it will be interesting to see if another tablet will be better suited for marine use. How long before there is a weatherproof iPad case?