Carrier, filmed in 2005 (Episode 7, "Rites of Passage"), a crossing-the-line ceremony on is extensively documented. The ceremony is carefully orchestrated by the ship's officers, with some sailors reporting the events to be lackluster due to the removal of the rites of initiation. Reflecting the popularity of tattoos among sailors, some people choose to get tattoos to mark that they have participated in a ceremony, such as an image of a shellback turtle or King Neptune. Honors for line crossings and other navigational events As Shellback initiation is conducted by each individual ship as a morale exercise and not officially recognized by the Navy with inclusion on discharge papers (DD Form 214) or through a formally organized institution, variations of the names as well as the protocol involved in induction vary from ship to ship and service to service. Unique Shellback designations have been given to special circumstances which include: The Star Spangled Shellbacks being given to the crew of crossing the equator on July 4, 1966. It is not known if this designation has ever been used before or since, as no other mention of such honor has been located to date. The Iron Shellback for the crew who served on , USS Vella Gulf (CG-72), and , who crossed the equator during a 200+ consecutive day underway with no ports during their 2020 deployment. Variations to the Shellback designation include: The Order of the Ebony Shellback for maritime personnel who have crossed the Equator on Lake Victoria. The Emerald Shellback or Royal Diamond Shellback for maritime personnel who cross the Equator at the prime meridian. The Golden Shellback for maritime personnel who have crossed the point where the Equator crosses the 180th meridian. The Top Secret Shellback for submariners who have crossed the equator at a classified degree of longitude. The Wooden Shellback for maritime personnel who have crossed the equator on a vessel with a wooden hull. Consequently, similar "fraternities" commemorating other significant milestones in one's career include: The Order of the Blue Nose (Domain of the Polar Bear) for maritime personnel who have crossed the Arctic Circle. The Caterpillar Club for aviators who have made an unscheduled parachute jump from a disabled plane. The Century Club for aviators who have completed their 100th carrier landing. The Realm of the Czars for maritime personnel who crossed into the Black Sea. The Order of the Ditch for maritime