Moving on a sailboat - bookshelf speakers?


I've decided to spend a year on a sailboat. I'm loath to give up my home system as it's about as good as you can get before spending silly money. (LX521s, ATI/Parasound, maxed-out Linn LP12 with Blackbird arm and VdH Frog) All of it is going in storage except for my Ayre QB-9 Twenty powered by my M1 Mac Mini. 

I am interested in opinions on great bookshelf speakers that actually need to live in a bookshelf. (No room for stand-mounted speakers in a 40' monohull sailboat.) I also need a good integrated amp to power the speakers. (I'm leaning towards the Audio by Van Alstine Vision SET 120 Control Amplifier.) 

I think I've got about 18" tall by 12" deep as limitations. Maybe less. (I'll update when I know for sure.) 

What speakers should I be looking at? Various reviews like the KEF but declare that it needs stands. Others declare the sub-$1000 B&W anniversary speakers and don't mention stands. I wish I could fit a pair of LX Minis, but the associated mid/bass tube knocks it out of the running. 

marktrav

As previously pointed out, a marine environment is harsh, even when berthed, so I would get outdoor/marine speakers.

After reading about all of the speakers recommended here, and then considering the size and placement. I think I’m going to put the Genelec G Three with the 7040A sub at the top of my list. You can put them anywhere and they sell wall and ceiling mounts which opens up a few other places I could place them without major surgery on the boat. I’ll probably hold off on the sub, but eventually, there is room in the storage space directly behind the listening position. 

I also have an open inquiry in to Magnepan for the Mini Maggie System, but I think the Genelec system will probably be more appropriate.

Thanks for all of the great input! 

@james633 , thanks for the recommendation!