This is a lightweight, easily deployed floating barrier – known as a containment boom — that can prevent the consequences of marine oil spills within minutes of leak detection. Standard booms are too big to keep onboard major spill sources like large ships and oil rigs, and must be stored offshore. When an oil spill occurs, disaster crews need to make their way to the storage site, load the boom onto two ships, sail to the spill and deploy the barriers. This can take a day or more. HARBO’s T-fence Immediate Booming System is 15 to 20 times lighter than regular containment booms and can be preinstalled onboard large ships and rigs. It includes a compact vessel the size of a lifeboat. The prefabricated modular booms are assembled and inflated with air and injected with seawater. The boom moves with the currents and waves and is not pushed off course.