In the print dialog choose A4 and leave the scale at 100%, or the squares come out a different size.
Fleet to cut out and two 10 × 10 boards
Cut out the fleet — 5, 4, 3, 3 and 2 — and lay it on your own board so no two ships touch, not even at a corner. Take turns calling a square, for example B7. A hit and you go again. A ship is sunk when every one of its squares is hit. First to sink the whole fleet wins.
My fleet
My shots
Fleet to cut outships 5 · 4 · 3 · 3 · 2 — squares the same size as the board
The page carries 2 lettered and numbered grids of 10x10 squares, side by side: the left one holds your own fleet, the right one records where you have fired. Squares are 8 mm. Underneath them runs a strip of ships — lengths five, four, three, three and two — meant to be cut out with scissors and laid on the left grid, which is what keeps a paper game honest about where a fleet actually sits.
There is one size of this sheet and you will want two copies of it, because each player needs a fleet of their own and somewhere private to record their shots. Print a pair, sit back to back or hold the paper up, and do not let the cut-out ships touch — not even corner to corner, which is the rule that makes the hunt a deduction rather than a lottery. A game runs twenty minutes or so; the scissors take one.
Choose A4 and leave the scale at 100%. Any other value shrinks the drawing, and a square that should measure 8 mm comes out smaller — which matters, because these boards are sized for a real pencil rather than for a screen. Ordinary 80 gsm copier paper is enough; anything heavier resists a fold. If your dialog offers “fit to page”, switch it off, then check the printed square against a ruler before you start playing.