Scala translation

What if the pirate ship reaches the right edge but there's a Navy ship in the range? Do I have to return false or true?

I scrutinized the edge cases and it seems that the ones originally used were far from enough to purge some implementations. So I added 2x25 fixed tests to scan through a lot of possibilities and ensure the algorithm.

I updated the python test suite, but those tests needs to be added to the C++ and Java versions too.

cheers