Dahon Mariner D7Dahon Mariner D7 Review. MarinerD7 folding bike was designed for boater, so if you love shore cycling adventures Mariner D7 by Dahon is recommended. This bike is comfortable to ride, compact design, easy to fold or unfold and storage. While MarinerD7 specifically designed for boater, it also great to use for commute around the city. … Read the rest