What is the drag effect on swimwear?

[Dooley67]

Originally Posted by Bede735

Though maybe the difference is more pronounced in long distance swimming? I like to swim at least 50 lengths in a session, but to attempt that wearing board shorts sounds exhausting.

Bede,

I try to swim between 20 and 25 laps each time and only having worn speedos since I started swimming 3 months ago, I can't even imagine what it would be like to swim in boardshorts.

D67