or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between ship placement and shading modes. In ship placement mode, right click gives sea, left click gives circle/square, left click and drag for rounded ships.)
Theme: Clue Symmetry and Logic
Author/Opus: This is the 201st puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard Battleships rules. Use the indicated fleet.
Answer String: For each row from top to bottom, enter the number of the first column from the left where a ship segment appears (enter just the last digit for any two-digit number). If the row is empty, enter 0. Enter these numbers as a single string with no separators.
Time Standards (highlight to view): Grandmaster = 1:15, Master = 1:45, Expert = 3:30