This is a beautiful essay, thank you. What is the literal meaning of "a diversion of the field"? Is "diversion" used in the sense of "that which diverts, and

This is a beautiful essay, thank you. What is the literal meaning of "a diversion of the field"? Is "diversion" used in the sense of "that which diverts, and makes mirth; pastime; amusement", and "of the field" in the sense of "pertaining to a large grassy open area where one might kick a ball around"? If so, it seems a bit of a stretch to apply the phrase to an activity that takes place on water. (Though Webster does also give a broader meaning for field: "An unresticted or favorable opportunity for action, operation, or achievement; province; room.")