After reading I wondered what other codes ships might have that we don't hear everyday and here is a list of what I found....for what it's worth.
Cruise Ships
30-30 – maintenance needed to clean up a mess
Alpha (specifically Alpha, Alpha, Alpha on Princess and Royal Caribbean ships) – medical emergency
Alpha Team, Alpha Team, Alpha Team – fire emergency on a Carnival Cruise Line ship
Bravo or Bravo, Bravo, Bravo – fire
Charlie – bomb threat
Charlie, Charlie, Charlie – security threat on Royal Caribbean ships
Code Blue – medical emergency
Code Red – outbreak of illness
Delta – damage to the ship on Norwegian Cruise Line
Delta, Delta, Delta – possible bio-hazard
Echo – the ship is starting to drift
Echo, Echo, Echo – possible collision with another ship or the shore on Royal Caribbean ships. On other ships it can mean danger of high winds while at port.
Kilo (specifically Kilo, Kilo, Kilo on Royal Caribbean ships) – all personnel to report to their emergency posts
Omega or Oscar or Bravo, Bravo or Mr. Mob – man overboard (we heard that on a Disney Cruise once. That was fun.)
Operation Bright Star (Code Mike on Oceania Cruises) – medical emergency, urgent assistance required
Operation Rising Star – someone died on board
Oscar, Oscar, Oscar – man overboard on Royal Caribbean ships
Mr. Skylight, or Alpha, Alpha, Alpha – minor emergency
Papa – environmental emergency (i.e., oil spill) on Norwegian Cruise Line
Priority 2 – leak
Purell, Purell, Purell or PVI (public vomiting incident) – cleanup (vomit) on Celebrity ships
Red Party – fire at sea
Red Parties, Red Parties, Red Parties – fire or possible fire on Disney Cruise Lines ships
Sierra – call for a stretcher
Star Code, Star Code, Star Code – medical emergency on Celebrity ships
Zulu, Zulu, Zulu – a fight aboard the ship