When the wind is abeam the effective wind is 10 knots, and though not all of it is employed in driving the boat ahead it will usually give the boat a greater speed than 4 knots.
Xa umoya ukumgca we-engile yasekunene umoya onguwo ungu-10 kwisantya esibekiweyo senqanawa, kwaye nangona ingenguwo wonke osetyenziswayo ekuqhubeni isikhephe isantya esikhulu kunesantya esibekiweyo esingu-4.