Which of these items cannot be brought on board a cruise ship?

Many people wonder if they can bring clothing steamers or irons on a cruise ship. Since these things are a potential fire hazard, they’re prohibited from being brought on a cruise ship. Fire is considered to be the worst thing that could happen on a cruise ship and therefore this is strictly enforced. It might be surprising to know, especially if you’re cruising for the first time, that, unlike a hotel room, you won’t have an iron in your cruise cabin.

Source: Life Well Cruised