The word apartment denotes a residential unit or section in a building. In some locations, particularly the United States, the word connotes a rental unit owned by the building owner, and is not typically used for a condominium.
A helm is the official name, but it is often referred to as the the wheel.. As ships modernize, however, we will start see less and less of the helm and begin to see a lever style control more often. A <b>helm</b> is the official name, but it is often referred to as the the wheel..
The horn on a ship can be called either the whistle or the horn. It is used to alert anyone not on the ship itself, usually other vessels. The other sound signaling device on a ship is the bell which is used to alert the crew and passengers who are on the ship. The first source link has sounds of different ship horns.