You miss that if x has no orthogal acsess to water or higher then sea level - no water spread. Also you can look at examples in description and submarine test cases

Hello, I am having trouble understanding the parameters.
For the fifth test, the output is supposed to be 'Frank, Tom, Sam'

      |==|  |==|  |==|          
    __|__|__|__|__|__|_         
 __|___________________|___     

|[][][][][][]|xxx
| F x S x T /
~|||______________/~~

Should the water not get into the side of the ship and get to all of the sailors? Or am I missing something? I understand that the top x's should be ignored because they are above the water.