Midnight Breach

Overlay Mosaic Crochet Blanket

Skill level: Advanced
Finished size: 50 × 60" (127 × 152.5 cm) body, blocked, before border; approximately 52 × 62" (132 × 157.5 cm) after border
Orientation: Portrait (50" / 127 cm wide × 60" / 152.5 cm tall)
Construction: One piece, bottom-up, overlay mosaic in turned rows, with a night-sky border worked in the round

A dense overlay-mosaic blanket picturing a shark leaping from a two-tone ocean into a starry night, with a large moon in the upper sky. Water is a written 6-stitch wave. The shark, splash, moon, and stars are placed by measurement and stitch markers and filled with overlay mosaic and mid-row color changes.

Materials

Yarn: Worsted weight (CYC 4), firm twist recommended for stitch definition.

Approximate amounts (mosaic single crochet is denser than a dc blanket; do not undershoot):

Allow extra of A, C, and E if your gauge is tighter than stated.

Hook: US H/8 (5.0 mm), or size needed to obtain gauge
Notions:

• 8–12 locking stitch markers
• Yarn needle
• Scissors
• Blocking mats and T-pins
• Optional: US G/6 (4.0 mm) hook for a firmer border
• Optional: small amount of black worsted or embroidery floss for the eye

Gauge

16 sts and 18 rows = 4" (10 cm) in overlay mosaic (sc blo on WS rows; sc blo and MDC on RS rows), blocked.

Swatch at least 6 × 6" (15 × 15 cm) in the Ocean Wave pattern below, using Colors C and D. Measure inside the swatch, not including selvedges.

Check: 16 sts = 4" → 4 sts per inch → 200 sts = 50" ✓
Check: 18 rows = 4" → 4.5 rows per inch → 270 rows = 60" ✓

If your stitch gauge is off, change hook size. If only row gauge is off, work extra or fewer 12-row ocean repeats so the water measures 24" (61 cm) before the breach, then keep the same proportions (water : breach : sky = 24" : 12" : 24").

Abbreviations (US)

• blo — back loop only
• ch — chain
• dc — double crochet
• FLO — front loop only
• hdc — half double crochet
• MDC — mosaic double crochet (see Special Stitches)
• pm — place marker
• rep — repeat
• RS — right side
• sc — single crochet
• sk — skip
• sl st — slip stitch
• st(s) — stitch(es)
• WS — wrong side
• yo — yarn over

Special Stitches

Selvedge stitch: Sc through both loops of the first and last stitch of every row. These two stitches are never worked blo and never replaced with MDC. They give a firm edge for the border and for carrying unused colors.

MDC (mosaic double crochet / overlay dc): Yo, insert hook from front to back under the front loop only of the stitch two rows below, yo, pull up a loop to the height of the current row, (yo, draw through 2 loops) twice. Skip the stitch of the current row that sits behind this MDC (do not work into it). The MDC takes its place.

The two rows of single crochet below are equal in height to one dc, so a correctly tensioned MDC sits level with the sc blo stitches beside it. If an MDC flares tall, pull the last yarn-over snug or work it as a hdc overlay instead — stay consistent.

WS companion row: After every RS mosaic row, work a WS row in the same color: ch 1, selvedge sc in first st, sc blo in each st to last st, selvedge sc in last st, turn. When the stitch two rows up was an MDC, sc blo of that MDC (use the back loop of the MDC as the work faces you).

Color pair: Two rows (RS + WS) in one color. Change color at the end of every WS row.

Overlay Mosaic Technique

This blanket is turned overlay mosaic, not inset mosaic and not tapestry crochet.

1. Work every RS (odd) row as the mosaic row: selvedge, then a mix of sc blo (background) and MDC (overlay that “paints” the other color up from two rows below), selvedge, turn.
2. Work every WS (even) row as sc blo in the same color, with selvedge stitches in both loops.
3. Change color every two rows. Do not cut unless a color will not be used again for several inches. Carry unused colors up the right-hand selvedge (as the RS faces you) under the selvedge stitches, keeping the carry loose enough that the edge does not cinch.
4. Never work into the skipped stitch behind an MDC. Never work an MDC into a stitch of the current row.
5. Mid-row color changes (shark, moon, splash) are intarsia mosaic: drop the old color, pick up the new color, and continue. Twist the two yarns once on the WS at the color join to close the gap. Use small separate balls (or long butterflies) of E, F, and B so you are not carrying a contrast color across a large field of sky or water.
6. Weave ends as you go. A six-color mosaic throw produces many tails; leaving them all for the end is miserable.

If you later use a colourwork chart for this scene: Read charts from right to left on RS rows. Each chart row represents one RS mosaic row (plus its WS companion, which is not charted). A filled cell is typically an MDC in the current color; an empty cell is sc blo. Selvedge stitches are not charted. The written pattern below does not depend on a chart and is complete on its own.

Mosaic symbol legend (for any chart you may use):

• Empty cell — sc blo
• Filled / X / contrast mark — MDC into FLO two rows below
• Edge stitches — sc in both loops (not shown on charts)

Color Story and Composition

Work the blanket as three stacked zones. All measurements are from the setup row, on the RS, after light blocking of the swatch has confirmed gauge.

Section 1 — Ocean (24" / 61 cm; pattern Rows 1–108)
Colors C and D in the written Ocean Wave, with Color F foam on wave peaks in the top third of the water.

Section 2 — The Breach (12" / 30.5 cm; pattern Rows 109–162)
The shark in Color E leaps from the water into the lower sky. Tail and lower body still in the ocean; snout, dorsal fin, and pectoral fin in the air. Color F spray around the tail and trailing edge. Horizon is not a hard stripe — let wave tips and splash break upward.

Section 3 — Night Sky (24" / 61 cm; pattern Rows 163–270)
Colors A and B. Scattered cream and white star overlays, denser toward the top edge. A large cream moon in the upper right (as the RS faces you).

Shark pose (RS view): Side-on, leaping up and to the left at roughly 45°. Pointed snout, slightly open jaw optional, one triangular dorsal fin, one pectoral fin angled down, strong crescent tail still kicking water. Keep the silhouette simple and graphic — this is mosaic, not taxidermy.

Placement (RS, inches from the lower-right mental map):

• Horizon / water surface: about 24" (61 cm) from the bottom edge
• Shark: centered left-to-right, occupying roughly the middle third of the width and stretching about 18" (46 cm) nose to tail and about 8" (20 cm) at the deepest point (body plus dorsal fin)
• Splash: Color F burst around the tail, 3–5" (7.5–12.5 cm) across
• Moon: about 9" (23 cm) in diameter, upper right; the moon’s top sits about 6" (15 cm) below the top edge, and its right edge sits about 6–8" (15–20 cm) in from the right selvedge
• Stars: irregular, all through Section 3, with a few low stars behind the shark’s snout so the leap reads as “into the night”

Mark these zones with locking markers on the fabric as you approach them. Move the markers up every few rows so the silhouette stays coherent.

Notes

• US crochet terms throughout.
• Ch 1 at the start of a row does not count as a stitch.
• Stitch count is 200 sts every row (2 selvedge + 198 pattern). Count at the end of every RS row until the mosaic is automatic.
• Pattern multiple: 6 sts + 2 selvedge. 33 × 6 = 198; 198 + 2 = 200 ✓.
• Do not turn the work into a pixel grid in your head: keep MDCs in service of edges and texture. Fill the interior of the shark and moon with sc blo in the motif color so the shapes stay solid.
• RS should face you with the ocean at the bottom and the moon at the upper right when the piece is complete.

Blanket

Setup

With Color C and H/8 (5.0 mm) hook, ch 201.

Setup row (WS): Sc in 2nd ch from hook and in each ch across, turn. — 200 sc.

This row is not counted in the 270 pattern rows. It will disappear into the lower border.

Section 1 — Ocean Waves

Colors C and D. Pattern Rows 1–108. Nine 12-row repeats.
Check: 9 × 12 = 108 ✓. 108 rows ÷ 18 rows per 4" = 24" ✓.

On every RS row: ch 1, selvedge sc in first st, work the 6-st repeat 33 times, selvedge sc in last st, turn.
On every WS row: work the WS companion row in the same color, then change color.

Ocean Wave repeat (6 sts; worked over the 198 pattern stitches)

The six RS rows below, each followed by its WS companion, make one 12-row wave.

Row 1 (RS, Color C): Ch 1, selvedge sc, *sc blo, MDC, sc blo 4 times; rep from * to last st, selvedge sc, turn.
Row 2 (WS, Color C): WS companion row. Drop C; pick up D.

Row 3 (RS, Color D): Ch 1, selvedge sc, *sc blo 3 times, MDC, sc blo 2 times; rep from * to last st, selvedge sc, turn.
Row 4 (WS, Color D): WS companion row. Drop D; pick up C.

Row 5 (RS, Color C): Ch 1, selvedge sc, *sc blo 5 times, MDC; rep from * to last st, selvedge sc, turn.
Row 6 (WS, Color C): WS companion row. Drop C; pick up D.

Row 7 (RS, Color D): Ch 1, selvedge sc, *sc blo 2 times, MDC, sc blo 3 times; rep from * to last st, selvedge sc, turn.
Row 8 (WS, Color D): WS companion row. Drop D; pick up C.

Row 9 (RS, Color C): Ch 1, selvedge sc, *sc blo 4 times, MDC, sc blo; rep from * to last st, selvedge sc, turn.
Row 10 (WS, Color C): WS companion row. Drop C; pick up D.

Row 11 (RS, Color D): Ch 1, selvedge sc, *MDC, sc blo 5 times; rep from * to last st, selvedge sc, turn.
Row 12 (WS, Color D): WS companion row. Drop D; pick up C.

Check (Row 1): 33 × 6 = 198 pattern sts + 2 selvedge = 200 ✓.

Rep Rows 1–12 another 8 times (9 times total) through Row 108.

Foam (begin on the 7th repeat, Rows 73–108): On Color D RS rows, you may replace 1–2 sc blo stitches that sit just after an MDC with MDC in Color F (join F only for those stitches, then return to D). Use F sparingly — foam is spray, not a second stripe. Carry F up the selvedge or use a short butterfly.

After Row 108 the piece should measure about 24" (61 cm) from the setup row.

Section 2 — The Breach

Pattern Rows 109–162 (54 rows).
Check: 54 rows ÷ 18 rows per 4" = 12" ✓. 54 is even, so 27 color pairs ✓.

Continue changing color every two rows. Through this section the background shifts from water to sky:

• Rows 109–126 (about 4" / 10 cm): mostly C and D waves, with F splash. Begin the shark tail and lower body in E.
• Rows 127–144 (about 4" / 10 cm): mixed horizon. Left and right still read as water or spray; the center is the shark’s body and dorsal fin. Introduce A at the upper corners as night sky.
• Rows 145–162 (about 4" / 10 cm): mostly A and B sky around the shark’s snout and pectoral fin. Water remains only as broken F/D spray near the tail.

Mark the shark before you need it. At Row 109, on the RS, place four locking markers to box the future silhouette in the middle third of the width (about 8" / 20 cm tall by 18" / 46 cm long, angled up and left). Move this box up and left as the leap develops.

Working the silhouette:

• Inside the shark: all stitches in Color E, almost entirely sc blo, so the body reads as a solid charcoal shape. Use MDC in E only where you need the shark color to climb over a row of water or sky.
• Outline: keep the edge one stitch crisp. Do not feather the shark into the water except at the tail, where E and F may interlace for 1–2 stitches of motion.
• Fins: dorsal fin is a triangle on the shark’s back; pectoral fin is a smaller triangle or wedge on the belly, pointing down and slightly back; tail is a crescent, lower lobe still in the water.
• Splash: with Color F, work irregular MDC clusters and short sc blo runs around the tail and along the back edge of the leap — denser at the tail, thinning to droplets (isolated MDCs) higher up.
• Mid-row joins: at each color change within the row, drop the old yarn, twist once on the WS with the new yarn, continue. Do not pull the join tight.

Row structure in Section 2 (every row still 200 sts):

• Ch 1, selvedge sc, work sc blo and MDC in the active background pattern until the shark/splash markers, work the motif as above, return to background, selvedge sc, turn.
• WS companion row in the same color(s). When a WS row contains more than one color, change colors at the same columns as the RS row below so the color joins stack vertically.

Background pattern inside Section 2:

• Where the row is still ocean, continue Ocean Wave Rows 1–12 in C and D, picking up the next row in sequence (Row 109 = next RS after Row 108 = Ocean Wave Row 1 again).
• Where the row is sky, work Night Sky (see Section 3) in A and B.
• Do not try to run both full repeats in the same stitches; once a column becomes sky, it stays sky.

After Row 162 the piece should measure about 36" (91.5 cm) from the setup row. The shark’s snout should already be in the sky; the tail should still read as wet.

Section 3 — Starry Night and Moon

Colors A and B, with F for a few brighter stars. Pattern Rows 163–270 (108 rows).
Check: 108 rows ÷ 18 rows per 4" = 24" ✓. 24" + 12" + 24" = 60" ✓. 163 through 270 inclusive = 108 rows ✓.

If any of the shark snout still remains in the first few rows of this section, finish it in E, then close the sky behind it with A.

Night Sky RS row (Color A or B, alternating in 2-row pairs, beginning with A on Row 163): Ch 1, selvedge sc, sc blo across, placing isolated MDCs for stars as described below, selvedge sc, turn.
WS companion row in the same color, then change A ↔ B.

Stars:

• On Color B RS rows, work 8–14 isolated MDCs, spaced irregularly, never stacked in a vertical stripe. A “star” can be a single MDC or a tiny cluster of 2–3 MDCs with sc blo between them.
• On Color A RS rows, work mostly sc blo. Add 2–4 MDCs only where you want a navy sparkle over a cream row.
• With Color F, add 3–5 extra-bright stars per 4" (10 cm) of height, more of them in the top 8" (20 cm).
• Crowd stars slightly toward the top edge; leave a quieter halo of navy immediately around the moon so the moon reads as a disc, not as more sky texture.

Moon (Color B, solid disc, upper right): Begin the moon when the fabric measures about 45" (114.5 cm) from the setup row (about 6" / 15 cm of sky still to work above the moon’s top).

Build a filled circle about 9" (23 cm) in diameter:

• Each RS row, the moon is a run of Color B stitches whose length grows, then shrinks, like a circle charted in rows: short chord, longer chords through the middle, short chord again.
• Inside the moon: sc blo in B. Use MDC in B only at the left and right rims, where cream must climb over navy.
• Outside the moon: Night Sky in A/B as established. Do not scatter stars on the disc.
• Use a separate ball of B for the moon so the sky’s B (stars) and the moon’s B do not drag floats across the navy.
• Optional: on the lower-right of the disc, work a few stitches in A to suggest a soft shadow or a slight waning edge. Keep it subtle.

Continue Night Sky until Row 270 (WS). Fasten off all colors except A, leaving a 6" (15 cm) tail.

The body should measure 50" wide × 60" tall (127 × 152.5 cm) at gauge, blocked.

Border

Join Color A with sl st in the upper-right corner as the RS faces you. Work with RS facing throughout. Do not turn.

Work sc evenly: 1 sc in each of the 200 sts on top and bottom, 1 sc in each of the 270 row-ends on each side, and 3 sc in each corner.

Rnd 1 (Color A): Sc in each st and each row-end around, 3 sc in each corner. Sl st in first sc to join.
Count: 200 + 200 + 270 + 270 = 940, plus 2 extra sc at each of 4 corners (8) = 948 sc ✓.

Rnd 2 (Color A): Ch 1, sc in each sc around, 3 sc in each corner sc (the center sc of the 3-sc corner). Sl st in first sc.
Count: 948 + 8 = 956 sc ✓.

Rnd 3 (Color B): Ch 1, sc in each sc around, 3 sc in each corner sc. Sl st in first sc. Fasten off.
Count: 956 + 8 = 964 sc ✓.

Optional Rnd 4 (advanced finish): With A and RS facing, reverse sc (crab stitch) in each st around, working 2 reverse sc in each corner. Fasten off. Reverse sc draws the edge in slightly; do not pull it tight.

Finishing

Weave in every remaining end on the WS, following the same color so tails do not show through the dense mosaic. Tug each MDC gently from the RS after weaving so the overlays sit flat.

Optional embroidery (RS, after blocking or just before):

• Eye: A small French knot or satin-stitch oval in black, set well forward on the head, with a tiny Color F catchlight.
• Gill: One short, slightly curved backstitch in E or black behind the eye.
• Do not outline the whole shark; the mosaic silhouette should do that work.

Blocking

Blocking is required. Overlay mosaic relaxes and the moon, waves, and shark only read clearly after the fabric is squared.

Wet block (preferred):

1. Soak in lukewarm water with a drop of wool wash for 15–20 minutes.
2. Press out water; do not wring. Roll in towels.
3. Pin to 50 × 60" (127 × 152.5 cm) for the body, allowing the border to sit naturally outside that rectangle (about 52 × 62" / 132 × 157.5 cm overall).
4. Square the corners. Ease the moon into a circle; ease the horizon so it does not dip.
5. Dry fully before removing pins.

Steam (acrylic only, if you cannot wet-block): Hover a steam iron; never crush the MDCs with the plate.

Schematic (words)

        50" (127 cm) body / ~52" (132 cm) with border
   +--------------------------------------------------+
   |  A/B night sky, scattered stars                  |  ~24" (61 cm)
   |                          ( moon 9" disc,         |
   |                            upper right )         |
   |     shark snout / dorsal fin entering sky        |
   +-----------------\  leap  /-----------------------+  ~12" (30.5 cm)
   |  C/D waves  \   shark    /  F splash             |
   |              \  tail in water                    |
   |  Ocean Wave, 9 repeats of 12 rows                |  ~24" (61 cm)
   +--------------------------------------------------+
                    60" (152.5 cm) body

Stitch-count summary