The Sirocco 15, is a recreational keelboat of which 350 were built starting in 1970 by Sirocco Boatworks in Canada. The fibreglass hull has a nearly plumb stem, a vertical transom, a transom-hung rudder controlled by a tiller and an iron swing keel. The boat has a cuddy cabin. It displaces and carries of iron ballast.
The boat has a draft of with the keel extended and with it retracted, allowing beaching or ground transportation on a trailer.
It has a fractional sloop rig, and may be equipped with a symmetrical spinnaker.
The design has a hull speed of .