As a standard containment boom, the Mark I is a sturdy, economical boom for general purpose and industrial use. This particular design is considered to be the best boom for most applications. It is chosen for normally calm, inland waters and ports with low current velocities, as well as slips, canals and holding ponds. It has the capabilities required to contain a spill and the physical characteristics to last a long time. Our unique double seals allows for smoother contouring in action, and easier retrieval and folding. The cylindrical flotation gives higher buoyancy and reduces or eliminates splash-over.