It's a Robert Legg 24
it is a trailerable 24' boat with a weighted swing keel. It has a well for an outboard aft of the cockpit. The well's opening can be covered if racing. It is indeed an Australian design; however, many were made in this country, I think in Michigan.They're sparse in the interior with sleeping for 4 close friends (V berth, 2 quarter berths). Space for a cooler and a place to put a portable stove, all in the salon is it. Plenty of storage, though.One great feature is the forward hatch (not visible in the photo) on the raised cabin opens out downward (and is removable) so the head sail can be set or struck while kneeling inside the cabin. Great idea for rough conditions.They are serious boats and raced in the oceans off the Australian coast. The owners have an active website.