[drran]

Trident is an anchor, symbol of Christianity, like cross or fish. The cross is the top part of an anchor, while the anchor itself is in the lower part. Anchor has such complex geometry because it weaved from wire. Similar anchors in full form can be found on some rare ancient Greek coins made in Khersones seaport (now Sevastopol). The anchor is similar to the symbol used by Rurik dynasty, so they liked it.