6.18How can I be advised of potential dangers for the navigation?

Using the Guard Zone alarms.

6.19What are Guard Zones?

Guard Zones are zones defined by the user that causes an audible and visual alarm to be triggered when a target exceeding a certain density enters into it. The density of the target that may trigger the alarm is regulated by mean of the Guard Zone sensitivity. There are two types of Guard Zones: Circular or Sectorial. They are fixed with respect to the ship position and heading but their range and orientation (only for sector type) are user defined.

6.20 How should I set the Guard Zone sensitivity?

Guard Zone sensitivity must be regulated accordingly to the current Gain of the Radar. The higher the sensitivity the smaller the target that may trigger the alarm. In general if you regulated your Radar to obtain a clean picture you can set the Guard Zone sensitivity very high to detect even the smaller targets. In case in the Radar picture is present clutter due to the higher gain set, you'll have to reduce the Guard Zone sensitivity to avoid triggering false alarms. In general a way to set the maximum sensitivity for a Guard Zone is to start increasing the sensitivity until an alarm is triggered and then reduce the sensitivity until the alarm stops.

Radar Operation Manual

 

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Standard Horizon CP300, CP500, CPV550, CP180I operation manual What are Guard Zones?

CP300, CP180, CP180I, CP500, CPV550 specifications

Standard Horizon is well known for its innovative marine electronics, particularly its line of chart plotters and multifunction displays. Among its popular products are the CPV550, CP500, CP180I, CP180, and CP300 models, each designed to enhance navigational experience for boaters and sailors.

The Standard Horizon CPV550 is a cutting-edge chart plotter that features a bright, high-resolution 5.5-inch color display. This model supports Navionics and C-MAP charts, ensuring users have access to high-quality cartography. Its built-in GPS receiver offers exceptional accuracy and fast position fixes, while its user-friendly interface allows for easy navigation through menus and functions. The CPV550 is equipped with a variety of connectivity options, including NMEA 0183, allowing for seamless integration with other onboard electronics.

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The CP180 offers similar capabilities but focuses on a slightly larger 8-inch screen. This model enhances visibility and provides an intuitive experience with its touch-screen interface. It supports various navigation modes and features such as AIS overlay and radar integration, which significantly improve situational awareness on the water.

Finally, the Standard Horizon CP300 is a versatile chart plotter that combines advanced features with exceptional user-friendliness. This model features a 9-inch display that offers crisp visuals and enhanced readability even in bright sunlight. It also stands out for its robust integration capabilities with other marine instruments. The CP300 includes built-in Bluetooth and Wi-Fi, allowing for wireless data sharing and connectivity with smart devices.

Overall, the Standard Horizon line of chart plotters, including the CPV550, CP500, CP180I, CP180, and CP300, offers advanced technological features, reliable performance, and user-friendly interfaces, making them excellent choices for both leisure and professional mariners alike. With a focus on connectivity, visibility, and customizable options, these devices enhance the navigation experience on the water.