The maritime industry is dependent on accurate positioning for safe navigation and operation of vessels in ports, environmentally sensitive areas, and areas where marine engineering projects, dredging, and hydrographic surveys are being carried out. The requirements for position accuracy, integrity, and service levels vary according to the type of activity undertaken. In addition to accuracy determination, and due to the great complexity of engineering projects, specific software tools and sensors are required to meet today's demands. These systems will be key elements of a modern navigation concept that integrates nautical cartography and position and depth data in real-time, in order to perform specific tasks with higher levels of safety and efficiency.