...just saw this on a random pic forum site
Expandacraft is much more than a kayak! It's a modular boat system which allows you to quickly reconfigure it from one type of watercraft to another.
Many kits are in development for sail, rowing, pedal power and more. Being modular, the Expandacraft will live up to its name. Constant development of new kits will help you expand your enjoyment on the water. Expandacraft, Inc.
... parts weight less than 10lbs each