obtaining ship blueprints

I guess this might be more a question for fellow canadian modellers but I’m looking for blueprints for the revised flower class corvette and river class frigates. I have the ISW 1/350 late corvette and am thinking of buying the 1/350 ISW Tacoma class frigate and modify it to a river class. So I just want to get the details correct. Also anyone know how to obtain blueprints for ships like USS Missouri or other popular plastic or resin kits from any service (USN, HMS)???

Thanks

http://floatingdrydock.com/TFW1.htm

Try the Floating Drydock, mostly for USN subjects. There are some other countries in the list

http://www.taubmansonline.com/

Another source is Taubmans Plans via the Loyalhanna Dockyard

thanks alot, I’ll give both sites a good once over.