The line-crossing ceremony is an initiation rite that commemorates a person's first crossing of the Equator. The tradition may have originated with ceremonies when passing headlands, and become a "folly" sanctioned as a boost to morale, or have been created as a test for seasoned sailors to ensure their new shipmates were capable of handling long, rough voyages. Equator-crossing ceremonies, typically featuring King Neptune, are common in the Navy and are also sometimes carried out for passengers' entertainment on civilian ocean liners and cruise ships. They are also performed in the merchant navy and aboard sail training ships. Throughout history, line-crossing ceremonies have sometimes become dangerous hazing rituals. Most modern navies have instituted regulations that prohibit physical attacks on sailors undergoing the line-crossing ceremony. Traditions Australia In 1995, a notorious line-crossing ceremony took place on the Royal Australian Navy submarine . Sailors undergoing the ceremony were physically and verbally abused before being subjected to an act called "sump on the rump", where a dark liquid was daubed over each sailor's anus and genitalia. One sailor was then sexually assaulted with a long stick before all sailors undergoing the ceremony were forced to jump overboard and tread water until permitted to climb back aboard the submarine. A videotape of the ceremony was obtained by the Nine Network and aired on Australian television. The coverage provoked widespread criticism, especially when the videotape showed some of the submarine's officers watching the entire proceedings from the conning tower. Canada In the Royal Canadian Navy, those who have not yet crossed the equator are nicknamed Tadpoles, or Dirty Tadpoles; an earlier nickname was griffins. United Kingdom By the eighteenth century, there were well-established line-crossing rituals in the British Royal Navy. On the voyage of HMS Endeavour to the Pacific in 1768, captained by James Cook, Joseph Banks described how the crew drew up a list of everyone on board, including cats and dogs, and interrogated them as to whether they had crossed the equator. If they had not, they must choose to give up their allowance of wine for four days, or undergo a ducking ceremony in which they were ducked three times into the ocean. According to Banks, some of those ducked were "grinning and exulting in their hardiness", but others "were almost suffocated". Captain Robert FitzRoy of suggested the practice had developed from earlier ceremonies in Spanish, Portuguese, and Italian vessels passing notable