The Sonnet 16, like the larger Sonnet 18 is an inflatable / folder hybrid. The frame consists of 4 sponsons, 3 aluminum stringers, and 2 cross braces. There is no deckridge or cross sections. The skin is 10oz Coverene PVC. The boats dimensions are 16.2' X 21" X 19.5 lbs ( 495cm X 53cm X 8.8kg). Assembly is consistently under 10 minutes, with disassembly under 5 minutes. Construction details and offsets can be found in the the "Inflatable Kayak Builders Manual. Use the (BACK) key to return.