scend or send (SEND) - n., the rising movement of a ship on a wave or swell; the lift of a wave. v., to heave in or as if in a swell.

Nautical jargon with possible extended uses. First recorded in the early 17th century, so it's been around a while. Unsurprisingly given it's old jargon, its origin is uncertain, but it seems to be an alteration of send under the influence of ascend.
---L.

Nautical jargon with possible extended uses. First recorded in the early 17th century, so it's been around a while. Unsurprisingly given it's old jargon, its origin is uncertain, but it seems to be an alteration of send under the influence of ascend.
---L.