This thesis examines Ukraine's naval strategy since 2022 using the concepts of Sea Denialand Sea Control. Through a theory-consuming case study and phase-based analysis ofBlack Sea maritime operations, it shows how Ukraine, despite initial disadvantage,challenged Russian sea dominance. Through precision weapons, drones, and asymmetrictactics, Ukraine achieved limited Sea Control in its coastal waters. The study concludesclassical maritime concepts remain relevant but require flexible interpretation in a modernconflict.