motorsailer

Noun

 * 1)  A vessel (usually a pleasure craft) that has been designed for both sailing and motor operation.

Usage notes
Practically all modern sailing vessels have a motor that can be used for propulsion. That alone does not make her a motorsailer. In a motorsailer some compromises (such as a shallower keel) have been made to make the vessel more suitable for motoring, and consequently less suitable for sailing than a typical sailing vessel.

Translations

 * Finnish: moottoripurjehtija
 * German: Motorsegler