Just played it, here's what I think:
Right off the bat, I felt engrossed in the game. It has charm, and it had me interested in the setting. This was evident throughout the entirety of the experience. Obviously, there are the telltale signs of it being an alpha, but your effort and passion toward the project are evident, and that's really cool.
The beginning exposition was over pretty quickly, but that's not something I minded overall. I could see what kind of vibe you were going for here, and I thought it added an element of mystery to the story.
The interfaces run really smoothly. Everything from the ship repair screen, to the marketplaces, to the book shelf search operated very well. The only thing I could say here right now is that it might be good to put some kind of description on marketplace items; I bought items I didn't need right off the bat, considering I would (for the scope of the current amount of content) only need ship supplies to get from place to place, and ended up running out of money until I sold the unnecessary items. Still, not a big huge deal, as these resources will probably be better explained in the full game when they're needed.
The various places you could go on the ship, each with its own function, was really well thought out, and added to the feel of you having control over all elements of your ship. It really fit the design well, and gave you those separate locations for character interactions. Well done there.
On the subject of character interactions, they were... sparse. Now, once again, this is more than likely due to the fact that there isn't much of the storyline here yet. However, having Teresa tell me I need to go to the library after I just got back from the library was a bit weird. What is there is fairly good, but I just wish there was more, and that will (I assume) come in the later iterations.
I don't want to completely comment on the art, as it's apparent that it's not all there yet. I don't really think I could say much on the art style just yet until everything is in there. Backdrops were really nice, though, once again, they are not all present yet. Music flowed together well, though I believe I recognized one of the tracks in there. My assumption is this is royalty free music; correct me if I'm wrong on this, though.
The one thing I can definitely say is really wrong with it at present is, and I must be blunt here, the writing. Don't get me wrong, I thought the story content overall was fine. However, especially in all of the writing that wasn't voiced, spelling and grammar mistakes abounded. In a game that really immerses someone like this one does, this just pulled me out of the experience. It's an easily reparable thing, and it would do wonders for the professionalism of the end product, especially if you're going to be distributing this one in a more widespread manner.
That was pretty long, so once again, I apologize. I actually really liked it, though I usually don't like visual novels, so it definitely drew me in that way. I hope you post more updates soon, I'm genuinely interested in seeing where you take this one!