Ship Design and Appearance

The Shark Submerge III is a small three-man submarine shaped like a shark. It was built by Franky in order to aid the Straw Hat Pirates when they ever come across a situation that requires going underwater. It has a Den Den Mushi so that the members of the Straw Hat crew that are using it can keep in touch with the rest aboard the Thousand Sunny. The Shark Submerge III has a diving limit of 5,000 meters. Going below any further than that would cause the sub to crack due to the surrounding water pressure.[2]