The article outlines the International Maritime Organization’s Ballast Water Management Convention, which enters into force on 8 September 2017. It mandates that ships carry a ballast water management plan and record book, conduct ballast water exchange (Regulation D‑1) or use treatment systems meeting discharge standards (Regulation D‑2), and undergo surveys and certification. Recreational vessels under 50 m may apply for equivalent compliance. Rosemont Yacht Services advises owners on the convention and encourages early preparation.