purlJam

1. **Design Strategy**: Thunderbird 4 is the submarine vehicle from the classic Anderson TV series "International Rescue." It is a distinctive yellow submarine with a rounded hull, prominent front claw/grabber arms, a domed cockpit canopy, rear thruster/engine pods, and a torpedo-like body shape. The softie needs to capture these key design elements: - Elongated torpedo/submarine body shape (yellow) - Rounded nose cone at front - Flat or slightly angled tail section with engine pods - Side claw/grabber arms (simplified as flippers/appendages) - Raised cockpit dome/canopy area on top (transparent blue in the show, but knitted in a contrasting colour) - Colour detailing: primarily yellow, with grey/silver accents, black details - The body is widest in the middle and tapers at both ends, like a submarine Construction approach: Since this is a knitted amigurumi-style softie using the template, I'll work in the round. The main body will be a modified oval/torpedo shape worked in the round on DPNs or magic loop. Separate pieces: main body, cockpit dome, front claw arms (two), rear engine pods (two), any fin details. For an "advanced" pattern, I can include colour work (duplicate stitch or intarsia), shaped appendages, and multiple pieces. Target finished size: approximately 25-30cm (10-12 inches) long, which is a satisfying softie size with worsted weight yarn. 2. **Construction Plan**: - **Main Body**: Cast on at the nose, increase to widest point, maintain for mid-section, decrease to tail — all in the round. This gives the torpedo shape. - **Cockpit Canopy**: Small dome worked in the round, separately, in contrasting colour, seamed on top of body. - **Front Claw Arms (×2)**: Short tubes with widened "claw" ends. Worked in the round. - **Rear Engine Pods (×2)**: Small cylindrical tubes, worked in the round, seamed to rear flanks. - **Dorsal/Tail Fins (×2 or ×4)**: Small flat pieces worked flat (back and forth) then seamed. - Assembly: Stuff body firmly. Attach all pieces. Embroider or use safety eyes for any detailing. Colours: - MC: Yellow (main body) - CC1: Mid grey (engine pods, claw details) - CC2: Light blue or teal (cockpit canopy — referencing the show's blue-tinted canopy) - CC3: Black (detailing, number "4" if desired) 3. **Quality Assurance**: - Need to ensure the torpedo body shape is achieved with smooth increases/decreases - Claw arms need to look like claws — use short rows or a forked bind-off approach - Engine pods must be proportionate - Fin pieces need to be stiff enough — could be worked doubled or with a cardboard insert suggestion - Safety note: recommend safety eyes only if no small children; otherwise embroider - All stitch counts must be verified at each section - Need to confirm the body length vs circumference ratio looks like TB4 4. **Final Calculations**: Standard worsted weight tension: 18-20 sts × 26-28 rows = 10cm (4 inches) in stocking stitch on 4mm/4.5mm needles. I'll use 4.5mm needles and a slightly tighter tension (for amigurumi, tighter to prevent stuffing showing): 20 sts × 28 rows = 10cm. So: 1 st ≈ 0.5cm; 1 round ≈ 0.36cm **Main Body Target Dimensions:** - Total length: ~28cm (11 inches) - Maximum circumference: ~22cm → max diameter ~7cm → max stitch count in round: 22cm ÷ (10cm/20sts) = 22 × 2 = 44 sts - Nose section: cast on 8, increase to 44 sts over ~10 rounds - Mid-section: work even for ~20 rounds (≈7.2cm) - Tail section: decrease from 44 back to 8-10 over ~10 rounds, then close Let me recalculate more precisely: Target max circumference: ~22cm. At 20sts/10cm: 22 × 2 = 44 sts. Good, divisible by 4 for symmetric shaping. Nose increases: Start with CO 8 sts, join. Round 1: kfb all 8 = 16 sts Round 2: knit Round 3: *k1, kfb* repeat = 24 sts Round 4: knit Round 5: *k2, kfb* repeat = 32 sts Round 6: knit Round 7: *k3, kfb* repeat = 40 sts Round 8: knit Round 9: *k4, kfb* repeat = 48 sts — wait, that's 8×6=48. Let me reconsider. Actually with 8 starting sts, each increase round adds 8 sts: 8 → 16 → 24 → 32 → 40 → 48 At 20sts/10cm, circumference at 48sts = 48/2 = 24cm diameter... wait. Circumference = 48 × (10/20) = 24cm. Diameter = 24/π ≈ 7.6cm. That's reasonable for the widest girth. Actually let me target 40 sts at maximum for a neater shape: 8 → 16 → 24 → 32 → 40 (4 increase rounds) Circumference at 40sts = 40 × 0.5cm = 20cm. Diameter = 20/π ≈ 6.4cm. Fine. Let me go with 48 sts as max for a plumper, more satisfying body. Starting: CO 8 sts using Judy's magic cast-on or just CO 8 and join carefully. Actually for a nose-first approach, I'll use a "magic ring" / gathering cast-on similar to top-down amigurumi: CO 8 sts, join to work in the round. Inc Round 1: kfb in each st — 16 sts Knit 1 round Inc Round 2: *k1, kfb* — 24 sts Knit 1 round Inc Round 3: *k2, kfb* — 32 sts Knit 1 round Inc Round 4: *k3, kfb* — 40 sts Knit 1 round Inc Round 5: *k4, kfb* — 48 sts ✓ That's 10 rounds to reach 48 sts. Good. Mid-body: 20 rounds even (≈7.2cm) Tail decrease: Dec Round 1: *k4, k2tog* — 40 sts Knit 1 round Dec Round 2: *k3, k2tog* — 32 sts Knit 1 round Dec Round 3: *k2, k2tog* — 24 sts Knit 1 round Dec Round 4: *k1, k2tog* — 16 sts Knit 1 round Dec Round 5: *k2tog* — 8 sts Break yarn, thread through remaining 8 sts, pull tight. Total rounds for body: 10 (nose inc) + 20 (mid) + 10 (tail dec) = 40 rounds Height/length: 40 × (10/28) = 40 × 0.357 = ~14.3cm That seems short for a satisfying softie. Let me extend the mid-section. Actually let me reconsider row gauge. At 28 rows = 10cm, 1 row = 0.357cm. For 28cm total length: 28 ÷ 0.357 = ~78 rounds total. Nose: 10 rounds ≈ 3.6cm ✓ (nose cone shape) Mid-section: 48 rounds ≈ 17.1cm Tail: 10 rounds ≈ 3.6cm ✓ Total: 68 rounds ≈ 24.3cm — getting closer but let me add a few more Actually, let me adjust: Nose: 10 rounds Mid-section: 55 rounds ≈ 19.6cm Tail: 10 rounds Total: 75 rounds ≈ 26.8cm ✓ approximately 27cm That's a good submarine length. Let me refine: Nose section: 10 rounds (working from 8sts to 48sts) Straight section: 55 rounds Tail section: 12 rounds (slightly longer taper for the submarine silhouette) For the tail I'll do: Dec Round 1: *k6, k2tog* × 6 — 42 sts Knit 2 rounds Dec Round 2: *k5, k2tog* × 6 — 36 sts Knit 1 round Dec Round 3: *k4, k2tog* × 6 — 30 sts Knit 1 round Dec Round 4: *k3, k2tog* × 6 — 24 sts Knit 1 round Dec Round 5: *k2, k2tog* × 6 — 18 sts Dec Round 6: *k1, k2tog* × 6 — 12 sts Dec Round 7: *k2tog* × 6 — 6 sts Wait, but I need 48 to be divisible by 6 for these... 48/6 = 8. Let me redo: Dec Round 1: *k6, k2tog* × 6 — 48 - 6 = 42 sts ✓ Dec Round 2: *k5, k2tog* × 6 — 42 - 6 = 36 sts ✓ Dec Round 3: *k4, k2tog* × 6 — 36 - 6 = 30 sts ✓ Dec Round 4: *k3, k2tog* × 6 — 30 - 6 = 24 sts ✓ Dec Round 5: *k2, k2tog* × 6 — 24 - 6 = 18 sts ✓ Dec Round 6: *k1, k2tog* × 6 — 18 - 6 = 12 sts ✓ Dec Round 7: *k2tog* × 6 — 12 - 6 = 6 sts ✓ With knit rounds between each dec: 7 dec rounds + 6 plain = 13 rounds for tail. 13 rounds × 0.357cm = ~4.6cm for tail. Good. Revised total: Nose: 10 rounds (3.6cm) Mid-section: 53 rounds (18.9cm) Tail: 13 rounds (4.6cm) Total: 76 rounds ≈ 27.1cm ✓ **Cockpit Canopy Dome:** The cockpit is roughly 1/3 of the way from the nose, slightly elongated oval, sitting on top of the body. Dimensions: approximately 8cm long × 5cm wide × 3cm high Worked as a small dome in the round. CO 10 sts (or use provisional, shape as a dome): Method: Cast on 6, work increases: Round 1: kfb all — 12 sts Round 2: *k1, kfb* — 18 sts Round 3: knit Round 4: *k2, kfb* — 24 sts Round 5: knit Round 6: *k3, kfb* — 30 sts Then work 4 rounds even (approximately 1.4cm of straight side) Then decrease: *k3, k2tog* — 24 sts *k2, k2tog* — 18 sts *k1, k2tog* — 12 sts *k2tog* — 6 sts This gives roughly: circumference at widest = 30 × 0.5 = 15cm, diameter ≈ 4.8cm, height ~4cm. That works as a cockpit dome. Actually I want it more oval. Let me make it a flattened oval by working it back and forth as an oval then seaming. Actually for simplicity let me do a small dome knitted flat as an oval. Working flat: CO 14 sts Row 1 (WS): purl Row 2 (RS): k1, *kfb*, k to last 2, *kfb*, k1 — 16 sts Rows 3-5: work in st st Row 6: k1, kfb, k to last 2, kfb, k1 — 18 sts Continue in st st for 8 rows more Then dec similarly: k1, k2tog, k to last 3, ssk, k1 each RS row until back to original, BO. Hmm, this is getting complicated for a dome. Let me keep it simpler — work as a flat oval circle. Actually the simplest approach for a dome/canopy: Cast on 8 sts with CC2 (blue/teal) Work in the round: Round 1: kfb in each st — 16 sts Round 2: knit Round 3: *k1, kfb* — 24 sts Round 4: knit Round 5: knit (work 2 rounds even) Round 6: *k1, k2tog* — 16 sts Round 7: *k2tog* — 8 sts Thread through, pull tight. This gives a small dome ~4cm wide and ~2cm tall. Seam flat bottom to body. **Front Claw Arms (×2):** TB4's signature feature is its front claw arms — two curved arm-like appendages that extend from the front underside. For the softie, I'll simplify as forked appendages. Each arm: a simple I-cord or tube that forks at the end into two "claw fingers" Work a small tube 3cm long, then divide for two-prong claw: Main tube: CO 12 sts, work in round for 10 rounds (~3.6cm) Then divide: place 6 sts on hold, work 6 sts for 4 rounds, BO. Rejoin yarn to held 6 sts, work 4 rounds, BO. This creates the fork. Each prong: 6 sts × 4 rounds ≈ 3cm wide × 1.4cm. **Rear Engine Pods (×2):** Small cylindrical pods on the rear flanks. CO 12 sts, work in round for 12 rounds (~4.3cm) Dec: *k1, k2tog* × 4 — 8 sts Dec: *k2tog* × 4 — 4 sts, close. Pod length: 12 rounds = ~4.3cm, diameter: 12 × 0.5/π ≈ 1.9cm. Good proportions. **Tail Fins (×2, upper and lower):** Small flat triangular fins. Work flat: CO 2 sts Row 1: kfb twice — 4 sts Row 2: k across Row 3: k1, kfb, kfb, k1 — 6 sts ...continue inc 2 sts every other row until 12 sts, work 2 rows even, BO. Make 2. Sew to rear sides of body. Let me verify all my stitch math once more before writing the pattern: **Body stitch count verification:** Start: 8 sts After Inc Rnd 1 (kfb×8): 8+8=16 ✓ After Inc Rnd 2 (*k1,kfb*×8): 16+8=24 ✓ After Inc Rnd 3 (*k2,kfb*×8): 24+8=32 ✓ After Inc Rnd 4 (*k3,kfb*×8): 32+8=40 ✓ After Inc Rnd 5 (*k4,kfb*×8): 40+8=48 ✓ Work 53 rounds even (48 sts throughout) ✓ Tail decreases (dividing into 6 sections of 8 sts each = 48÷6=8 ✓): Dec Rnd 1: *k6,k2tog*×6: 48-6=42 ✓ k1 plain Dec Rnd 2: *k5,k2tog*×6: 42-6=36 ✓ k1 plain Dec Rnd 3: *k4,k2tog*×6: 36-6=30 ✓ k1 plain Dec Rnd 4: *k3,k2tog*×6: 30-6=24 ✓ k1 plain Dec Rnd 5: *k2,k2tog*×6: 24-6=18 ✓ Dec Rnd 6: *k1,k2tog*×6: 18-6=12 ✓ Dec Rnd 7: *k2tog*×6: 12-6=6 ✓ Total rounds: 10 (nose) + 53 (mid) + 13 (tail) = 76 rounds ✓ Round count for nose section: CO 8, then: Rnd 1: kfb×8 = 16 (1 round) Rnd 2: knit (1 round) Rnd 3: *k1,kfb* = 24 (1 round) Rnd 4: knit (1 round) Rnd 5: *k2,kfb* = 32 (1 round) Rnd 6: knit (1 round) Rnd 7: *k3,kfb* = 40 (1 round) Rnd 8: knit (1 round) Rnd 9: *k4,kfb* = 48 (1 round) Rnd 10: knit (1 round) = 10 rounds ✓ Tail section round count: Dec Rnd 1, plain, Dec Rnd 2, plain, Dec Rnd 3, plain, Dec Rnd 4, plain, Dec Rnd 5, Dec Rnd 6, Dec Rnd 7 = 7 dec rounds + 4 plain rounds = 11 rounds Wait, I said 13 rounds before. Let me recount: Dec Rnd 1: *k6,k2tog* (round 1) Knit 1 round (round 2) Dec Rnd 2: *k5,k2tog* (round 3) Knit 1 round (round 4) Dec Rnd 3: *k4,k2tog* (round 5) Knit 1 round (round 6) Dec Rnd 4: *k3,k2tog* (round 7) Knit 1 round (round 8) Dec Rnd 5: *k2,k2tog* (round 9) Dec Rnd 6: *k1,k2tog* (round 10) Dec Rnd 7: *k2tog* (round 11) = 11 rounds ✓ Corrected total: 10 + 53 + 11 = 74 rounds Length: 74 × 0.357cm = ~26.4cm ≈ 26cm (approximately 10.25 inches) ✓ That's a good length. I'll adjust the mid-section note: 53 rounds even. Now let me think about the "4" number on the side. TB4 has a bold "4" on its side. I'll include instructions for duplicate stitch embroidery of the number 4 after completion. Also, TB4 has some black detail lines and a grey/silver ventral keel. I'll include embroidery notes. Let me also think about the cockpit canopy placement: it sits roughly 10-12 rounds forward from the widest point (which is at round 10 + ~15 of mid = round 25). So it would be placed about 8-10cm from the nose end. For the written pattern, I want to be clear and professional. Let me organise: **Pattern Sections:** 1. Materials 2. Tension/Gauge 3. Abbreviations 4. Notes & Construction Overview 5. Main Body (nose forward, working to tail) 6. Cockpit Canopy Dome 7. Front Claw Arms (make 2) 8. Rear Engine Pods (make 2) 9. Tail Fins (make 2) 10. Finishing & Assembly 11. "4" numeral chart for duplicate stitch One more thought on the claw arms: TB4's claws are more like hydraulic grabs. I'll design them as a padded tube that splits into two blunt prongs. Making them stuffed will give them 3D presence. For the pattern, since this is "advanced," I can include: - Colour changes on the body (a horizontal band of grey near the nose, and grey along the underside/keel) - These can be done as intarsia or duplicate stitch — I'll recommend duplicate stitch for simplicity Let me also double-check the cockpit dome calculations: CO 8 sts, join Rnd 1: kfb×8 = 16 Rnd 2: knit Rnd 3: *k1,kfb*×8 = 24 Rnd 4: knit Rnds 5-8: knit (4 rounds) Rnd 9: *k1,k2tog*×8 = 16 Rnd 10: *k2tog*×8 = 8 Thread through 8 sts. Dome width at 24 sts: 24×0.5cm = 12cm circumference, diameter ≈ 3.8cm Dome height: ~3.6cm (10 rounds × 0.357) That's a reasonable dome for the cockpit. Actually I want it a bit larger. Let me go to 30 sts: CO 8 Rnd 1: kfb×8 = 16 Rnd 2: knit Rnd 3: *k1,kfb*×8 = 24 Rnd 4: knit Rnd 5: *k2,kfb*×8 = 32 Hmm, 32 is fine but let me try: CO 6 Rnd 1: kfb×6 = 12 Rnd 2: *k1,kfb*×6 = 18 Rnd 3: knit Rnd 4: *k2,kfb*×6 = 24 Rnd 5: knit Rnd 6: *k3,kfb*×6 = 30 Rnds 7-9: knit (3 rounds) Rnd 10: *k3,k2tog*×6 = 24 Rnd 11: *k2,k2tog*×6 = 18 Rnd 12: *k1,k2tog*×6 = 12 Rnd 13: *k2tog*×6 = 6 Thread through. Width at 30 sts: 30×0.5 = 15cm circ, diameter ≈ 4.8cm ✓ (fits nicely on the top of the body) Height: 13 rounds × 0.357 = ~4.6cm ✓ Good! This is better. The base of the dome (diameter ~4.8cm) will be sewn onto the top of the body. **Claw arm revision:** Tube: CO 16 sts, join, work 8 rounds in CC1 (grey). This gives circumference of 8cm (diameter ~2.5cm), length ~2.9cm. Then knit 4 more rounds in MC (yellow) with arm shaped. For the prong split: Place 8 sts on hold for second prong. Work first 8 sts: Rnd 1-5: work in round (these 8 sts become a small tube) Dec: *k2tog*×4 = 4 sts, thread through, close. Rejoin to held 8 sts, work same. The fork creates two stubby claws. Each prong: 8sts × 5 rounds ≈ circumference 4cm (diameter 1.3cm), length 1.8cm. Good proportions. **Engine pod revision:** I want pods that taper at the rear. CO 16 sts in CC1, join. Work 10 rounds. Dec Rnd: *k2,k2tog*×4 = 12 sts Work 2 rounds Dec Rnd: *k1,k2tog*×4 = 8 sts Work 2 rounds Dec Rnd: *k2tog*×4 = 4 sts Thread through. Pod: initial circ 8cm (diameter ~2.5cm), length: 10+2+2+3 dec rounds = 17 rounds ≈ 6.1cm. Good engine pod size. Wait, I'm going to re-examine the dec round count: Rnd 1-10: knit (10 rounds) Dec Rnd 11: *k2,k2tog*×4 = 12 sts (1 round) Rnds 12-13: knit (2 rounds) Dec Rnd 14: *k1,k2tog*×4 = 8 sts (1 round) Rnds 15-16: knit (2 rounds) Dec Rnd 17: *k2tog*×4 = 4 sts (1 round) = 17 rounds total ≈ 6.1cm ✓ Also need a small flat circular end for the nose end of each pod (or just gather the cast-on edge). **Tail fins:** Working flat, 2 pieces. CO 2 sts Row 1 (RS): k1, kfb, k1 — wait, that's only kfb in middle, gives 3 sts. Better approach: CO 2 sts Row 1: kfb, kfb — 4 sts Row 2: knit (or purl for st st) Row 3: k1, kfb, kfb, k1 — 6 sts Row 4: purl Row 5: k1, kfb, k2, kfb, k1 — 8 sts Row 6: purl Row 7: k1, kfb, k4, kfb, k1 — 10 sts Row 8: purl Row 9: k1, kfb, k6, kfb, k1 — 12 sts Rows 10-14: work in st st Cast off. Two pieces worked identically, place WS together and seam around edges (leaving a small opening if stuffing, but fins can be flat and unstuffed). Actually for rigidity, make two pieces, join together on 3 sides. This gives fins: 12 sts wide = 6cm, ~5 rows + 5 straight = ~3.6cm + 1.8cm = ~5.4cm tall. Reasonable fin size. Actually for the tail fins I want them to look more like the real TB4 fins — quite prominent. Let me increase to 16 sts. CO 2 sts Inc 2 per RS row until 16 sts: 2 → 4 → 6 → 8 → 10 → 12 → 14 → 16 (7 increase rows, 6 plain rows between) = 13 rows Work 4 rows even Cast off. Width: 16sts × 0.5cm = 8cm. Height: 17 rows × (10/28) ≈ 6cm. Good fin size! I'll make 2 fins and sew them to the upper flanks near the tail. Now, there's also a small vertical fin on top of the tail in the show. I can include this as well, smaller: CO 2, inc to 8 sts (5 increase rows), work 2 even, BO. Width: 4cm, height: ~2.5cm. OK, I think I have enough for a comprehensive pattern. Let me also think about the "4" duplicate stitch chart. A simple block numeral "4" on a 7-stitch × 9-row grid would work. I'll describe the chart or provide a written row-by-row description. Let me now write the full pattern cleanly and verify all numbers as I go. One more check — TB4's shape: looking at it more carefully, the front (nose) section is quite rounded and bulbous, the body is torpedo-shaped, and the rear tapers to a flat tail with twin engine outlets. The claws/grabs come from the lower front quarter. There's a prominent canopy on the forward-upper section. I think my design captures this reasonably well. Let me also note: the body should have the cockpit positioned roughly at rounds 12-22 from the nose (about 4-8cm from nose, which is in the right area for TB4's forward canopy placement). The claw arms attach at roughly rounds 8-12 from the nose, on the underside. The engine pods attach at the rear, roughly at the last 12 rounds of the mid-section. The fins attach at the very tail. I'm satisfied with the design. Let me write the complete pattern now. One final thought — for the nose of TB4, it's not perfectly round — it has a distinctive rounded but slightly flattened front with what looks like sonar equipment. I'll keep the round nose as it's easier to knit and suggests the rounded front. I can add embroidered details to indicate the sonar dome. Needle size: 4mm needles (slightly smaller than standard for worsted to ensure tight fabric for amigurumi). Tension: 22 sts × 28 rounds = 10cm in stocking stitch. Let me recalculate with 22 sts/10cm: 1 st = 0.454cm ≈ 0.45cm 1 round = 0.357cm (keeping row gauge same) At 48 sts: circumference = 48 × 0.454 = 21.8cm, diameter ≈ 6.9cm ✓ Body length: 76 rounds × 0.357 = 27.1cm ✓ OK let me go with tension: 22 sts × 28 rounds = 10cm in stocking stitch on 4mm needles. This is realistic for amigurumi-style knitting with worsted yarn. Actually, I realise I've been going back and forth. Let me just settle on a tension and be consistent: **TENSION: 22 sts × 30 rows = 10cm (4 inches) in stocking stitch on 4mm needles.** Using this: 1 st = 10/22 = 0.455cm 1 round = 10/30 = 0.333cm At 48 sts: circumference = 48 × 0.455 = 21.8cm, diameter ≈ 6.9cm ✓ Body length at 76 rounds: 76 × 0.333 = 25.3cm ✓ (~25cm = approximately 10 inches) Good. Let me go with 25cm finished length. I'll need to adjust mid-section rounds: Nose: 10 rounds = 3.3cm Mid: let's aim for 17.5cm → 17.5/0.333 = ~52.5 → 52 rounds Tail: 11 rounds = 3.7cm Total: 10+52+11 = 73 rounds = 73×0.333 = 24.3cm ≈ 24cm For a rounder ~26cm: Mid: 57 rounds Total: 10+57+11 = 78 rounds = 26cm ✓ I'll use 57 rounds for mid-section. Let me go with this. Final body specs: - Finished length: ~26cm (approximately 10.25 inches) - Maximum circumference: ~22cm (~8.5 inches) - Maximum diameter: ~7cm (~2.75 inches) These are good proportions for TB4 — it should be elongated enough to look submarine-like. Alright, I'm confident in the numbers. Writing the pattern now.

[PRE-FLIGHT CHECKS] **1. Completeness:** ✅ Materials list, tension, abbreviations, notes, construction overview, all pieces (body, cockpit dome, claw arms ×2, engine pods ×2, tail fins ×2, dorsal fin ×1), finishing/assembly, embroidery detail chart — all present. **2. Consistency — Stitch Count Verification:** *Main Body:* - CO 8 sts - Inc Rnd 1: kfb×8 = 8+8 = **16 sts** ✓ - Inc Rnd 2: *k1,kfb*×8 = 16+8 = **24 sts** ✓ - Inc Rnd 3: *k2,kfb*×8 = 24+8 = **32 sts** ✓ - Inc Rnd 4: *k3,kfb*×8 = 32+8 = **40 sts** ✓ - Inc Rnd 5: *k4,kfb*×8 = 40+8 = **48 sts** ✓ - 57 rounds even: 48 sts throughout ✓ - Tail Dec 1: *k6,k2tog*×6 = 48−6 = **42 sts** ✓ - Tail Dec 2: *k5,k2tog*×6 = 42−6 = **36 sts** ✓ - Tail Dec 3: *k4,k2tog*×6 = 36−6 = **30 sts** ✓ - Tail Dec 4: *k3,k2tog*×6 = 30−6 = **24 sts** ✓ - Tail Dec 5: *k2,k2tog*×6 = 24−6 = **18 sts** ✓ - Tail Dec 6: *k1,k2tog*×6 = 18−6 = **12 sts** ✓ - Tail Dec 7: *k2tog*×6 = 12−6 = **6 sts** ✓ *Total body rounds:* 10 (nose) + 57 (mid) + 11 (tail) = **78 rounds** ✓ *Estimated length:* 78 × 0.333cm = **26cm (10.25 inches)** ✓ *Cockpit Canopy:* - CO 6 - Rnd 1: kfb×6 = **12 sts** ✓ - Rnd 2: *k1,kfb*×6 = **18 sts** ✓ - Rnd 3: knit - Rnd 4: *k2,kfb*×6 = **24 sts** ✓ - Rnd 5: knit - Rnd 6: *k3,kfb*×6 = **30 sts** ✓ - Rnds 7–9: knit even - Rnd 10: *k3,k2tog*×6 = 30−6 = **24 sts** ✓ - Rnd 11: *k2,k2tog*×6 = 24−6 = **18 sts** ✓ - Rnd 12: *k1,k2tog*×6 = 18−6 = **12 sts** ✓ - Rnd 13: *k2tog*×6 = **6 sts** ✓ Width at max (30 sts): 30×0.455cm = **13.6cm circumference → ~4.3cm diameter** ✓ *Claw Arms (each):* - CO 16, Rnds 1–8 even: 16 sts throughout ✓ - Split: 8 sts each prong - Each prong: 8 sts × 5 rounds, then *k2tog*×4 = 4 sts → thread through ✓ *Engine Pods (each):* - CO 16 - Rnds 1–10: 16 sts ✓ - Dec Rnd: *k2,k2tog*×4 = **12 sts** ✓ - Rnds 12–13: knit - Dec Rnd: *k1,k2tog*×4 = **8 sts** ✓ - Rnds 15–16: knit - Dec Rnd: *k2tog*×4 = **4 sts** ✓ *Tail Fins (each, worked flat):* - CO 2, inc 2 sts every RS row to 16 sts (7 increase rows) ✓ - 4 rows even - Cast off: 16 sts ✓ **3. Constraints:** ✅ UK English spelling throughout (colour, grey, tension, centimetres) ✅ Metric measurements primary, imperial in parentheses ✅ Worsted weight yarn, 4mm needles (UK standard) ✅ Amigurumi template followed: worked in the round, DPNs/Magic Loop, separate pieces seamed ✅ Advanced difficulty: colour detailing, multiple pieces, embroidery chart ✅ TB4-specific features: torpedo body, cockpit canopy, claw arms, engine pods, tail fins, "4" numeral ✅ Safety notes included regarding safety eyes **4. Safety — Math Check:** - 48 ÷ 6 = 8 (for tail decrease sections) ✓ - 16 ÷ 4 = 4 (for engine pod decreases) ✓ - All kfb increases properly add 1 stitch per kfb worked ✓ - All k2tog decreases properly remove 1 stitch per k2tog worked ✓ - Tension: 22 sts × 30 rows = 10cm → 0.455cm/st, 0.333cm/row ✓ - Finished measurements consistent with stated gauge ✓ All checks passed. Proceeding to pattern.