OKB Grigorov is a small model company based in Bulgaria that you may not be too familiar with. The company focuses primarily on AFVs, tanks, and naval ships in 1/72, 1/350 and 1/700 scales and they have an extensive list of products available. They produce full resin kits with photo-etch enhancements, as well as resin, photo-etch and white metal conversion pieces for other models.
The kit I reviewed is a 1/700 scale version of the Dutch Walrus class submarine. The Royal Netherlands Navy (RNN) currently operates four submarines. These submarines entered service with the RNN in 1990 and are named after sea mammals (Sea Lion, Porpoise, Dolphin, Walrus). The four boats are currently going thru an upgrade program and the picture on the cover of the model box is a photo of one of the submarines being worked on in a dry dock.