Here is the tutorial:
Here is the quilt on Barbara's blog.
My first quilt was a ships quilt made for my nephew back in 1980.
I have started some new blocks using Claire's directions. I have changed up the pressing a bit to accommodate my sewing quirks, and have discovered I really hate trimming half square triangles to size, but will persevere. Her directions are well written and her blocks are great inspiration.
A funny story about ship quilts. When my sister curated a display of military artifacts, one family brought in a quilt a neighbor made for them in memory of their brother who died at sea in WWII.
I remarked, "Oh, a ships quilt," to which the woman said, "What?" For 60 years she just saw it as abstract triangles and rectangles--she didn't see a ship depicted. Now she wonders how they missed that!