PANTA RHEI is a true sailor's performance cat built in epoxy composite. It features some of the most innovative design that you will ever see on a cat or any sailing craft: a free standing (unstayed), rotating carbon mast that is inspired by the Aero-rig design to optimize air flow over the sails and ease of handling; dagger-boards and kick-up rudders that allow for excellent upwind tracking under sail and access to the shallowest waters. Tired of heavy cats that do not sail in light airs or of cumbersome head-sail changes (solent to genoa to screecher to asymmetric spinnaker and back down) to optimize performance in changing wind conditions. This cat is built very light and requires minimum sail handling. The mainsail sheet and mast rotation are run back to the cockpit. An 18 HP Yanmar engine runs a simple, retractable drive that extends down from the main cockpit. If you are looking for a spacious cat with multiple cabins and heads that can accommodate your in-laws, this is not your boat. If rocketing down waves in 25 kts tradewinds is your preference, this is the short-handed voyager's dream! Please review the detailed spec and design and build brief below.