This document provides an agenda and information for the ZEETEX SEMINAR OOSTENDE on July 9th, 2013. The parallel session 4 focuses on shipbuilding and sailing. It will include an introduction on composites used in shipbuilding, windmills, ship interiors and exteriors. There will also be presentations on rules and regulations in the maritime industry, blue energy technologies like kites and sails for ship propulsion, coatings to reduce fouling on maritime materials, and current and future applications of composites in marine industries.