The Queen Stephanie is the greatest and grandest ocean liner in the world, also the nicest.
She occasionally visits the Big Harbor after getting stuck under Benjamin Bridge by accident was the first time she appeared in the series. In another, she even had R. Boat in her swimming pool after R. Boat wished he could be big. Apparently, Her Majesty has about 1,001 windows on each of her sides. The Queen holds a special place in her heart for Theodore. She's based on the RMS Queen Elizabeth.
- It is said that Queen Stephanie's model is currently on displayed at the Maritime Museum of the Atlantic.