Marine Development, Inc. (MDI) designs, engineers, manufactures, installs and repairs floating freshwater marina systems, wave attenuators (breakwaters) and municipal pump stations throughout the United States. MDI has over 40+ years of engineering and manufacturing experience building marinas with the highest quality products, and exceptional service. We pride ourselves in the timely and efficient execution of each project because we know that in the marina business, time is money. Our extensive references will support our claim to consistent on-time, on-budget performance.