Offshore capital projects are characterized by their scale, complexity, and exposure to multifaceted risks, often resulting in significant challenges in delivering on time and within budget. Traditional project control approaches tend to operate in silos—separating schedule, cost, and risk management—thereby limiting the ability to make timely, integrated decisions. This proposes a multi-layer project controls framework designed to unify schedule, cost, and risk functions within offshore capital project environments. The framework is structured across three layers: strategic, tactical, and operational. The strategic layer ensures alignment with organizational goals and portfolio-level oversight; the tactical layer governs project-specific planning and performance thresholds; and the operational layer supports real-time tracking, reporting, and corrective actions. Integration across layers is achieved through data-driven decision support systems, enabling dynamic forecasting and risk-informed control adjustments. A PRISMA-based literature review was conducted to establish the theoretical foundation and identify best practices and gaps from 72 relevant studies. The findings underscore the importance of interdependency awareness among control domains, supported by digital tools such as BIM, ERP, and advanced analytics platforms. The proposed framework aims to enhance predictability, improve accountability, and reduce the reactive nature of project management in offshore settings. Implementation guidance includes an assessment of organizational readiness, phased deployment strategies, and continuous learning loops. This contributes to the body of knowledge by offering a scalable and adaptable control model that bridges governance and execution, tailored specifically for the offshore capital sector. Future research opportunities include integrating sustainability metrics, AI-based forecasting, and automation to further elevate project performance and resilience. This framework represents a step forward in addressing the fragmented control environment of offshore capital projects by offering a cohesive structure for integrated decision-making and value realization.