sign ▁was ▁based ▁on ▁the ▁traditional ▁triple - ta iled ▁Swedish ▁model . ▁In ▁addition , ▁the ▁new ▁union ▁mark ▁was ▁to ▁be ▁used ▁as ▁the ▁naval ▁jack ▁and ▁as ▁the ▁flag ▁for ▁the ▁common ▁diplom atic ▁representations ▁abroad . ▁The ▁war rant ▁also ▁st ip ulated ▁that ▁the ▁merchant ▁fleet ▁use ▁their ▁respective ▁countries ' ▁square - cut ▁civil ▁en sign s , ▁including ▁the ▁new ▁union ▁mark . ▁Also , ▁royal ▁en sign s ▁were ▁introduced ▁for ▁both ▁countries , ▁their ▁respective ▁naval ▁en sign s ▁with ▁the ▁union ▁mark , ▁with ▁the ▁addition ▁of ▁the ▁union ▁arms ▁at ▁the ▁center ▁of ▁the ▁cross . ▁The ▁new ▁union ▁flags ▁were ▁well ▁received ▁by ▁the ▁Norweg ians , ▁who ▁had ▁demanded ▁their ▁own ▁military ▁en sign ▁since ▁the ▁union ▁was ▁formed . ▁In ▁Sweden , ▁however , ▁the ▁new ▁union ▁mark ▁in ▁particular ▁became ▁quite ▁un pop ular ▁and ▁was ▁cont empt u ously ▁nick named ▁the ▁S ills all aten ▁( S wed ish ) ▁or ▁S ild es al aten ▁( N or weg ian ) ▁after ▁a ▁color ful ▁d ish ▁of ▁pick led ▁her ring , ▁decor ated ▁with ▁red ▁be ets ▁and ▁app les ▁in ▁a ▁radial ▁pattern . ▁It ▁is ▁believed ▁that ▁the ▁name ▁was ▁first ▁used ▁in ▁a ▁speech ▁by ▁Lord ▁B rak el ▁in ▁the ▁Swedish ▁House ▁of ▁L ords ▁in ▁Stockholm . ▁ ▁During ▁the ▁ 1 9 th ▁century , ▁a ▁number ▁of ▁reg ulations ▁were ▁issued ▁regarding ▁the ▁use ▁of ▁Swedish