Happy Cat Evolution Buyer's Guide
The Happy Cat Evolution is an inflatable sailing catamaran from Grabner, the German specialists who built it as the fastest and most professional of their Happy Cat line. For a buyer shopping used Happy Cat Evolution boats, the appeal is a 15-foot multihull that stows as a pair of slim 180-by-25-by-25-centimeter bags, weighs 75 kilograms, and sails with a 123.78-square-foot rig—yet can also be paddled or run with up to a 6 hp outboard. This guide stays with the boat's documented facts and the known points a viewer should check.
What to Inspect
The hull's integrity rests on its inflation system, so confirm the two air chambers hold 0.3 bar and that the outer EPDM and inner natural-rubber skins show no patch fatigue at the seams where pressure-heated vulcanization joined the materials. A soft hull below the specified pressure means the "very stable and hard" ride the builder describes is lost, and a slow leak in either of the two chambers isolates one float but still grounds the boat. Check the bow and stern stowage compartments, each rated at 40 liters, for water intrusion that would load the 500-kilogram working limit unnoticed. Verify the mast of about 21.6 feet and the 11.5-square-meter sail are complete and the fractional rigging untangled, and confirm the ISO 6185cat VI/C plate is present on the red hull. When you view the boat, ask to see it packed: the two slim bags should each measure close to 180 centimeters long and 25 square in section, and the total 75-kilogram weight should be liftable by two people without rigging.
Buyer's Takeaway
- Verify both air chambers hold 0.3 bar with no drop over an hour
- Inspect EPDM and natural-rubber seams for prior repairs or chafe
- Check bow and stern 40-liter compartments for leaks or saturation
- Confirm mast, sail, and 6 hp outboard limit match the specification
- Look for the ISO 6185cat VI/C label on the red hull before purchase
- Ask to see the boat packed into its two 180-centimeter bags