The fourth session of the Gulf exhibition for marine industries was inaugurated here today. More than 150 companies from around the world are participating in the show. Australia, Bahrain, Canada, China, Denmark, France, Germany, Greece, India, Iran, Italy, Malaysia, the Netherlands, Philippines, Qatar, the Kingdom of Saudi Arabia, Singapore, South Africa, Spain, Tunisia, Britain and the US are participating in the show. On the fringes of the show a forum on maintenance and services for ships will also be organized. The participants of the show will shed light on ship-building in the Gulf region, shipping, design of boats for the Gulf region and other related topics.