The Maritime and History Museum of the Croatian Littoral Rijeka keeps the design of the barque Grad Karlovac by Ignacije Arčanin, 1867, gouache on paper, PPMHP, inv. no. 903 PPMHP 107353 76 x 49 cm. The design was made in 1867 by Ignacije Arčanin, who is also the shipbuilder of the barque Grad Karlovac for the owner Vjenceslav Turković. The inscription Piani geometrici del Bark mercantile della portata di Tonnelate. Ignazio Archianin, constructor Navale is highlighted on the design. The design shows the ship from the side, with masts and flags on them. Piano elevazioni – the upper part of the design, and Piano orizontali– the lower part.