Part 2 / Act 3 — Act III.
Reading edition
Sc. 1.
"With deafening clamour in the slippery clouds."
What the poet seems to mean is, that the billows though hung in the clouds, would not adhere to them, on account of their slippery nature, but fell back into the sea. Shrouds, the reading of Collier's folio, seems poor and trivial.
"Then, happy low, lie down."
For 'low, lie down,' Warburton read lowly clown. But it is of a ship-boy the poet is speaking, and he would hardly make so sudden a transition.