Storm at Sea quilt pattern
12" blocks of square-in-a-square and diamond-in-a-rectangle units with straight seams only. Set side by side, the diamonds look like rolling waves.
The queen size is 92" × 104" with 56 blocks. Each size below has its own fabric list, cutting and backing, worked out for 42" fabric with ¼" seams, 10% extra and yardage rounded up to the next ¼ yard.
| Size | Finished | Blocks | Top fabric |
|---|---|---|---|
| Crib | 44" × 56" | 12 | 4½ yd |
| Throw | 56" × 68" | 20 | 6½ yd |
| Twin | 68" × 92" | 35 | 10½ yd |
| Full | 80" × 92" | 42 | 12½ yd |
| Queen | 92" × 104" | 56 | 16 yd |
| King | 104" × 104" | 64 | 18¼ yd |
The Storm at Sea block page has the cutting for single blocks in four sizes and the piecing step by step, with a drawing of every unit.

Crib Storm at Sea quilt, 44" × 56"
12 blocks of 12", 4 rows of 3, 4" border.

| Centers, BindingAqua swirl | 1 yd | |
| Main, BorderNavy solid | 2¼ yd | |
| BackgroundWhite solid | 1¼ yd | |
| Backing2 panels 52" long, seams across; or 1½ yd of 108" wide | 3 yd | |
| Batting72" × 90" | Twin |
Cutting
- Centers, Binding: Cut 3 strips 2⅝" × WOF. Subcut 48 squares 2⅝" for the corner diamonds. Cut 2 strips 3" × WOF. Subcut 24 squares 3" for the center triangles, cut once on the diagonal. Cut 6 strips 2½" × WOF. Join into one 212" strip.
- Main, Border: Cut 6 strips 2⅜" × WOF. Subcut 96 squares 2⅜" for the corner triangles, cut once on the diagonal. Cut 3 strips 3⅞" × WOF. Subcut 24 squares 3⅞" for the center corners, cut once on the diagonal. Cut 7 strips 3¼" × WOF. Cut 48 pieces from Storm at Sea template B. Cut 5 strips 4½" × WOF. Join end to end. Cut 2 at 48½" and 2 at 44½".
- Background: Cut 1 strips 3½" × WOF. Subcut 12 squares 3½" for the centers. Cut 16 strips 2" × WOF. Cut 192 pieces from Storm at Sea template A.
Putting it together
- Make 12 Storm at Sea blocks, 12" finished (12½" with seam allowance). That takes 12 Storm at Sea blocks.
- Lay out the blocks in 4 rows of 3. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
- Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
- Layer the backing (52" × 64"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.
Throw Storm at Sea quilt, 56" × 68"
20 blocks of 12", 5 rows of 4, 4" border.

| Centers, BindingAqua swirl | 1¼ yd | |
| Main, BorderNavy solid | 3¼ yd | |
| BackgroundWhite solid | 2 yd | |
| Backing2 panels 64" long, seams across; or 2 yd of 108" wide | 3¾ yd | |
| Batting72" × 90" | Twin |
Cutting
- Centers, Binding: Cut 5 strips 2⅝" × WOF. Subcut 80 squares 2⅝" for the corner diamonds. Cut 3 strips 3" × WOF. Subcut 40 squares 3" for the center triangles, cut once on the diagonal. Cut 7 strips 2½" × WOF. Join into one 260" strip.
- Main, Border: Cut 10 strips 2⅜" × WOF. Subcut 160 squares 2⅜" for the corner triangles, cut once on the diagonal. Cut 4 strips 3⅞" × WOF. Subcut 40 squares 3⅞" for the center corners, cut once on the diagonal. Cut 12 strips 3¼" × WOF. Cut 80 pieces from Storm at Sea template B. Cut 6 strips 4½" × WOF. Join end to end. Cut 2 at 60½" and 2 at 56½".
- Background: Cut 2 strips 3½" × WOF. Subcut 20 squares 3½" for the centers. Cut 27 strips 2" × WOF. Cut 320 pieces from Storm at Sea template A.
Putting it together
- Make 20 Storm at Sea blocks, 12" finished (12½" with seam allowance). That takes 20 Storm at Sea blocks.
- Lay out the blocks in 5 rows of 4. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
- Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
- Layer the backing (64" × 76"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.
Twin Storm at Sea quilt, 68" × 92"
35 blocks of 12", 7 rows of 5, 4" border.

| Centers, BindingAqua swirl | 2 yd | |
| Main, BorderNavy solid | 5¼ yd | |
| BackgroundWhite solid | 3¼ yd | |
| Backing2 panels 100" long, seams down; or 2¼ yd of 108" wide | 5¾ yd | |
| Batting90" × 108" | Queen |
Cutting
- Centers, Binding: Cut 9 strips 2⅝" × WOF. Subcut 140 squares 2⅝" for the corner diamonds. Cut 5 strips 3" × WOF. Subcut 70 squares 3" for the center triangles, cut once on the diagonal. Cut 8 strips 2½" × WOF. Join into one 332" strip.
- Main, Border: Cut 17 strips 2⅜" × WOF. Subcut 280 squares 2⅜" for the corner triangles, cut once on the diagonal. Cut 7 strips 3⅞" × WOF. Subcut 70 squares 3⅞" for the center corners, cut once on the diagonal. Cut 20 strips 3¼" × WOF. Cut 140 pieces from Storm at Sea template B. Cut 8 strips 4½" × WOF. Join end to end. Cut 2 at 84½" and 2 at 68½".
- Background: Cut 3 strips 3½" × WOF. Subcut 35 squares 3½" for the centers. Cut 47 strips 2" × WOF. Cut 560 pieces from Storm at Sea template A.
Putting it together
- Make 35 Storm at Sea blocks, 12" finished (12½" with seam allowance). That takes 35 Storm at Sea blocks.
- Lay out the blocks in 7 rows of 5. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
- Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
- Layer the backing (76" × 100"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.
Full Storm at Sea quilt, 80" × 92"
42 blocks of 12", 7 rows of 6, 4" border.

| Centers, BindingAqua swirl | 2¼ yd | |
| Main, BorderNavy solid | 6¼ yd | |
| BackgroundWhite solid | 4 yd | |
| Backing3 panels 88" long, seams across; or 2½ yd of 108" wide | 7½ yd | |
| Batting90" × 108" | Queen |
Cutting
- Centers, Binding: Cut 11 strips 2⅝" × WOF. Subcut 168 squares 2⅝" for the corner diamonds. Cut 6 strips 3" × WOF. Subcut 84 squares 3" for the center triangles, cut once on the diagonal. Cut 9 strips 2½" × WOF. Join into one 356" strip.
- Main, Border: Cut 20 strips 2⅜" × WOF. Subcut 336 squares 2⅜" for the corner triangles, cut once on the diagonal. Cut 9 strips 3⅞" × WOF. Subcut 84 squares 3⅞" for the center corners, cut once on the diagonal. Cut 24 strips 3¼" × WOF. Cut 168 pieces from Storm at Sea template B. Cut 8 strips 4½" × WOF. Join end to end. Cut 2 at 84½" and 2 at 80½".
- Background: Cut 4 strips 3½" × WOF. Subcut 42 squares 3½" for the centers. Cut 56 strips 2" × WOF. Cut 672 pieces from Storm at Sea template A.
Putting it together
- Make 42 Storm at Sea blocks, 12" finished (12½" with seam allowance). That takes 42 Storm at Sea blocks.
- Lay out the blocks in 7 rows of 6. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
- Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
- Layer the backing (88" × 100"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.
Queen Storm at Sea quilt, 92" × 104"
56 blocks of 12", 8 rows of 7, 4" border.

| Centers, BindingAqua swirl | 2¾ yd | |
| Main, BorderNavy solid | 8 yd | |
| BackgroundWhite solid | 5¼ yd | |
| Backing3 panels 100" long, seams across; or 3¼ yd of 108" wide | 8½ yd | |
| Batting120" × 120" | King |
Cutting
- Centers, Binding: Cut 14 strips 2⅝" × WOF. Subcut 224 squares 2⅝" for the corner diamonds. Cut 8 strips 3" × WOF. Subcut 112 squares 3" for the center triangles, cut once on the diagonal. Cut 10 strips 2½" × WOF. Join into one 404" strip.
- Main, Border: Cut 27 strips 2⅜" × WOF. Subcut 448 squares 2⅜" for the corner triangles, cut once on the diagonal. Cut 12 strips 3⅞" × WOF. Subcut 112 squares 3⅞" for the center corners, cut once on the diagonal. Cut 32 strips 3¼" × WOF. Cut 224 pieces from Storm at Sea template B. Cut 9 strips 4½" × WOF. Join end to end. Cut 2 at 96½" and 2 at 92½".
- Background: Cut 5 strips 3½" × WOF. Subcut 56 squares 3½" for the centers. Cut 75 strips 2" × WOF. Cut 896 pieces from Storm at Sea template A.
Putting it together
- Make 56 Storm at Sea blocks, 12" finished (12½" with seam allowance). That takes 56 Storm at Sea blocks.
- Lay out the blocks in 8 rows of 7. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
- Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
- Layer the backing (100" × 112"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.
King Storm at Sea quilt, 104" × 104"
64 blocks of 12", 8 rows of 8, 4" border.

| Centers, BindingAqua swirl | 3¼ yd | |
| Main, BorderNavy solid | 9 yd | |
| BackgroundWhite solid | 6 yd | |
| Backing3 panels 112" long, seams across; or 6¼ yd of 108" wide | 9½ yd | |
| Batting120" × 120" | King |
Cutting
- Centers, Binding: Cut 16 strips 2⅝" × WOF. Subcut 256 squares 2⅝" for the corner diamonds. Cut 10 strips 3" × WOF. Subcut 128 squares 3" for the center triangles, cut once on the diagonal. Cut 11 strips 2½" × WOF. Join into one 428" strip.
- Main, Border: Cut 31 strips 2⅜" × WOF. Subcut 512 squares 2⅜" for the corner triangles, cut once on the diagonal. Cut 13 strips 3⅞" × WOF. Subcut 128 squares 3⅞" for the center corners, cut once on the diagonal. Cut 37 strips 3¼" × WOF. Cut 256 pieces from Storm at Sea template B. Cut 10 strips 4½" × WOF. Join end to end. Cut 2 at 96½" and 2 at 104½".
- Background: Cut 6 strips 3½" × WOF. Subcut 64 squares 3½" for the centers. Cut 86 strips 2" × WOF. Cut 1024 pieces from Storm at Sea template A.
Putting it together
- Make 64 Storm at Sea blocks, 12" finished (12½" with seam allowance). That takes 64 Storm at Sea blocks.
- Lay out the blocks in 8 rows of 8. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
- Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
- Layer the backing (112" × 112"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

See this quilt in your own fabric
With the cut list for your size, checked against your stash.