This means that the battery is discharged down to 10.5 volts over a 20 hour period while the total actual amp-hours that it supplies are measured. Sometimes ratings at the 6 hour rate and 100 hour rate are also given for comparison and for different applications.
Pool meets are usually no more than 4 hours, but beach meets last about 7 hours. It depends how many events are in the meet. And then if it is a really big meet (like a tournament kind of) it can last days. Hope that helps.
After one mile, as your next milestone, Iâd suggest 5000 meters (5500 yards) or 3.1 miles â the equivalent of runningâs half marathon. It will take 90 minutes to two hours for most fitness swimmers or triathletes to swim this distance in open water. Beyond that the swimming equivalent of a 26.2-mile running marathon would be a 10,000-meter (6.2 miles) swim. U. S. Masters Swimming offers both open water championships and pool postal swims at those distances.