About all you'll find in 1/700 are resin kits. Take a look at Combrig, NNT, and WSW.
Combrig used to focus on Russo-Sino War subjects, but they've branched out into all sorts of subjects. The quality of the models ranges from good to excellent, and they're the most affordable of the resin ship kits out there (on average).
http://www.steelnavy.com/CombrigPage.htm
NNT Model is a producer in Germany as well as a hobby shop. They have an interesting selection of kits, but I've never built one, so I can't comment on the quality. It takes some effort to get to the NNT resin kit listing on their website, but here it is anyway.
http://www.nntmodell.com/
WSW is another great company whose models are affordable and great to build. They also have an awesome product line if you're into pre-WWI and WWI-era ships.
http://www.steelnavy.com/WSW.htm
Although I haven't looked at their product lines, B-Resina, YS Masterpieces, and Delphis Models are also active in 1/700 stuff.
Jeff