The Chicago Rowing Foundation hosts weekly drop-in sessions in its state-of-the-art rowing tank from 1-2 p.m. Wednesdays at the Clark Park Boathouse, 3400 N. Rockwell St.

A rowing foundation coach will be on hand to instruct beginners on the basics of sculling — rowing with an oar in each hand — and to help veterans fine-tune their technique.

No registration is required; cost is $10.