here is a link to the pattern that cathyvv mentioned - just click on the download button
https://www.robertkaufman.com/quilti..._in_the_water/
also...if you want to alter the size(s) of your blocks, this site has free downloadable coloring sheets that you can download and print onto graph paper then adjust to the size you want. (don't forget to add seam allowances) Scroll way down the page here, to find "storm at sea coloring pages" links:
https://www.generations-quilt-patter...ormAtSeaRulers