Once the ceremony is complete, a Pollywog receives a certificate declaring his new status. Another rare status is the "Golden Shellback", a person who has crossed the Equator at the 180th meridian. The rarest Shellback status is that of the "Emerald Shellback" (US), or "Royal Diamond Shellback" (Commonwealth), which is received after crossing the Equator at the prime meridian, near the Null Island weather buoy. When a ship must cross the Equator reasonably close to one of these meridians, the ship's captain will typically plot a course across the "Golden X" so that the ship's crew can be initiated as Golden or Emerald/Royal Diamond Shellbacks.