With those sails, you must have found an earlier issue of the kit....
The first issue of the kit included those nice sails, plus a removable fin keel. The model could be built as a pond sailer-- it was the best boat in my fleet as a boy-- I used to dail it a lot on lakes and ponds. I think this was the 1969 or so release.....
In the 1970s, I remeber seeing the model re-released as a "Civil War Blockader". This was at least nominally accurate, as the America was part of the Union Navy during the Civil War. This version of the kit was not advertised as a pond sailer...
In the mid 1980s, I remember seeing the kit again on store shelves-- this time on one of the boxes with the big yellow Revell stripe. At this point, the box said it included vaccum fomed sails, and there was no mention on the box about it being "adaptable for use on water!" like the first release did.
In my stash, I have the Civil war version of the kit, which is missing the triangular removeable fin keel of the first release. I also have the box, sails, and masts from a first issue kit- one of those ebay specials where someone built the hull and never finished the model. Over time the hull was lost, but the box with the remaining parts survived. I considered myself lucky to get a set of the original printed sails for such a low price......
One of these days I'll build the model as an RC conversion-- knowing how well she sailed as a pond sailer, I'm sure she'd make decent RC boat as well, and a nice looking boat for the mantel......
I'd definitely echo jtilley's statement about the suitability for beginners. If this kit was still on the market, it is the one I'd recommend heartily....
(Note: All of the release dates are from memory-- and I'm pretty sure that, as a kid gowing up in rural Vermont, we didn't always see kits in the local stores as soon as they came out..... If my dates are off, I hope jtilley will correct me...)