SCUBA 850-μm clumps identified with clfind containing significant velocity gradients, in NGC 1333, IC 348 and L1448. The colour-scale denotes the C¹⁸O J = 3 → 2 line centre velocity, linearly scaled from the clump minimum (blue/black) to maximum (red/white). Contours of 850-μm flux density are overlaid (black) at 100, 200, 400, 800, 1600 and 3200 mJy beam⁻¹. A white/black circle marks the position of the clump peak emission with a white line positioned to show the direction of the fitted velocity gradient. The full version of this figure is available as Supporting Information to the online version of this article.