sweeps and swelters of the whirl

  • Thomas Tompion

    Senior Member
    English - England
    The meaning is clear enough I think: the boat swayed to and fro, in response to the great surges and tossing of the whirlpool.

    They are in a boat on the edge of a whirlpool, so it's not surprising that the boat moves around a great deal.

    The word swelters isn't often used in this sense. Here, it is, I'd say, a version of welter which means a rising or tossing.
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