In the early days of maritime navigation, despite the hard work of sailors, technological limitations made navigation instruments very basic and unreliable. These devices often had large measurement errors, which could lead ships to unknown locations or even cause them to be lost at sea, never returning home. Today, modern vessels are equipped with advanced electronic systems that provide highly accurate navigation data, greatly improving safety and efficiency.
Modern automatic radar plotting devices are computerized, multi-functional systems that automatically process radar information. They can track targets within a range of 0.4 to 59 kilometers. Whether in automatic or manual mode, these systems can detect and track between 10 to 25 targets simultaneously. By combining the motion parameters of nearby objects with those of the ship itself, they display critical navigational information on the terminal screen. This helps the captain and helmsman make informed decisions regarding safe navigation and collision avoidance.
The Card Navigation System has an effective range of up to 463 kilometers. Over 40 Card chains are currently installed worldwide, with nearly half located in Nordic waters. Since the 1980s, the system has seen significant technological advancements, including miniaturization, digitization, and structural improvements. These enhancements have greatly improved its performance, making it one of the key navigation tools used by modern ships for reliable and precise positioning.
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