The New Zealand designers Jamie McLellan and Andy Jacobs have turned their focus from furniture and lighting to their mutual passion for boating. The result is the McLellan Jacobs Kayak 1 (www.mclellanjacobs.com). Nearly 11 feet long, the single-person kayak is made of carbon fiber, so it weighs less than 40 pounds, making it easy to transport and maneuver in the water. The seat back, carrying handles, and deck hatch are made of teak. Priced at $15,000, the vessel can be ordered with a paddle made of teak and carbon fiber. Each kayak requires eight to 10 weeks for completion.