Most modular kayaks rely on relatively similar technologies in terms of how they are assembled and taken apart. The goal, after all, is to make that process as straightforward as possible; they are created with ease of use in mind. In essence, each section is designed to snap in place and is typically held together with some sort of locking system – this why you often hear them referred to as “Snap Kayaks”.That said, each model will come with a specific set of assembly instructions, but this video should give you an idea of how it works:
Assembly Manual: Mercury Modular Kayak by Point 65 Sweden
Watch this video on YouTube