If you have a love for the ocean and enjoy being on a ship at sea, you may want to invest in a nautical tattoo. When it comes to nautical astronomy, this refers to the navigation of a ship. Some of the most commonly selected include an anchor, stars, ships, a wheel of the vessel and even mermaids in some cases. Nautical tattoos symbolize survival and being strong at all times regardless of what life sends your way. Sailors were one of the first ones to have a tattoo, and this presented a tough side for the crew member to see.