The Seapod (duo-module) is designed as an amphibian shelter for two persons. Inside it has two small rooms accessible by a cupola hatch. On land it can be pulled as a sledge. On sea it functions as a sort of catamaran on which the operator can sit or stand on, steering by weight balance. Seapod is made to face extreme natural forces. The module is made of EPS-foam, sandwiched between two shells of fiberglass reinforced composite. A technique, which makes the module insulated, strong and practical unsinkable.