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Battleships sudoku

Hi,

I don't know if it'll happen with the tournament's sudoku, but if there is no clue in a row/column, does it mean that:

1. There is no ship in that row/column (or will it be indicated by a 0?)
or
2. The sum of the digits occupied by ships can be any number in that row/column?

Thanks for the answer,
Fred

Unfortunately, Thomas hasn't answered here. But I'm sure there's nothing secret. In the competition puzzle clues for all rows and columns are given.

Thanks for the answer, I just wanted to be sure, as the case doesn't appear in the example puzzle.

Fred