Nordo-Celtic knot symbolizing the Drakkar longships paired with the central Icelandic Vegvisir ("sign post"), which is a type of late medieval bind-rune that was a magic sigil to prevent the bearer from getting "lost in the storm". The Vegvisir is often erroneously identified as a Viking-age rune.
Know your Vegvisirs. I was drawing these, wondered why the different versions around the place. Nobody can figure out what Björks tattoo actually is, a Galdrabók one roughly done most likely #bjork #vegvisir #tattoo