Wind Assisted Cargo Vessel (or WACV for short) is becoming more plentiful and come in many different types, sizes and age.
Here is one that may win some followers:

The THARSIS equipped with eConowind Flatrack Ventifoil® units inbound for Rotterdam.
Photo: Willem Holtkamp ©

M/V Tharsis has her own Facebook page. She trades mostly between Netherlands and UK. Looks like she just got those sails in October.

More new wind power solutions for ships is in the pipeline: