The ring of swimming bestows the ability to swim at a full 21” base speed upon the wearer, assuming, of course, he or she is clad only in garments appropriate for such activity. 

It further enables the wearer to dive up to 50 ft. into water without injury, providing the depth of the water is at least 1½ ft. per 10 ft. of diving elevation; and the wearer can stay underwater for up to 4 rounds without needing a breath of air. 

Surface swimming can continue for 4 hours before a 1 hour (floating) rest is needed. 

The ring confers the ability to stay afloat under all but typhoon-like conditions.