MSI was originally founded as Magionos and Spiros Industries, a company born from the deep maritime roots and hands-on experience of our founder, Spiro. A lifelong fisherman and sailor, Sprio understood that the success of any operation at sea is built on reliability of its equipment and the integrity of its systems. Today, that foundation has been transformed into MSI Marine Supplies and Repairs, where the Spiro family continues his legacy by providing the technical expertise and high-quality components necessary to keep modern vessels mission ready.