Furuno 500 manual Weather, Track line and weather setting value, Rudder Gain

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4. MENU OPERATION

WEATHER

When the sea is rough, the boat’s heading fluctuates to port and starboard. If the rudder is driven very often to maintain the set course, the helm mechanism may wear out. To prevent this, the weather adjustment makes the NAVpilot-500 insensitive to minute course deviations. You may choose a degree between 1° to 10°. Until the course deviation exceeds the selected setting, steering to correct the heading will not be initiated.

The illustration below shows boat’s track lines with weather setting 3° and 7°. When 7° is set, for example, the rudder is not driven until the course deviation exceeds 7°. Increasing the setting reduces activation of the steering gear, however the boat tends to zigzag. When the sea is calm, set a smaller value.

7

3

Weather = 3 Weather = 7

Track line and weather setting value

RUDDER GAIN

When the boat’s heading deviates from the set course, the NAVpilot-500 adjusts the rudder to correct it. The rudder angle (number of degrees) which is steered against every degree of course deviation is known as the rudder gain.

The following illustrations show how many degrees the NAVpilot-500 steers the rudder in order to nullify 10 degrees of course deviation with various settings of the rudder gain.

Rudder gain = 0.1

Rudder gain = 0.3

Rudder gain = 0.8

10

10

10

Rudder angle = 10 x 0.1=1

Rudder angle = 10 x 0.3= 3

Rudder angle = 10 x 0.8= 8

Rudder angle and rudder gain setting

4-5

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Contents Model NAVpilot-500 00014698415 Important Notices How to discard this product How to discard a used batteryGeneral Safety Instructions Table of Contents Index Foreword FeaturesWord to the Owner of the NAVpilot-500 System configuration of NAVpilot-500 System ConfigurationPrinciple of Autopilot Principle of the AutopilotPrinciple of Operation Operating Controls Basic OperationControl unit, front view Turning On/Off Turning the power offStartup sequence Contrast, brilliance window Adjusting Brilliance and ContrastChoosing the display mode DisplaysSelecting data Displayed data Analog indicator selectionPort Stbd Available graphics for graphic displayStby mode display ex. Normal Display Stby ModeSteering Modes Using the Auto mode Auto ModeAuto mode display Normal display Advanced auto options window Advanced Auto modeAdvanced Auto mode display ex. Normal display Enabling the Advanced Auto modeStarting the NAV mode NAV ModeNAV mode display Normal display Nav mode options window Selecting sailing method of NAV modeNAV mode, Course and XTE Waypoint switching options window Switching waypointSteering Mode Turn menu Turn ModeExample of 360º maneuver in turn mode 180º Turn for Auto mode onlyExample of 180º maneuver in turn mode 360º Turn for Auto mode onlyExample of orbit maneuver ex. clockwise OrbitTo escape from the Orbit while it is in use, press Stby key Spiral Example of spiral maneuver in turn modeSteering Mode Figure Eight Example of Figure Eight in NAV modeTLL navigation Navigating to TLL pointDial type remote controller FAP-5551 Remote ModeRotating dial Turning power off dial typeNFU No Follow-Up mode display Turning power on, button and lever type remote controllersTurning power off, button and lever type remote controllers Operating remote controller ex. button and lever typesDodging in Stby mode Dodge ModeDodge mode display 359 Dodging in Auto or NAV modeThis page is intentionally left blank Stby mode menu Stby Mode MenuMenu Operation Sea state options window Setting parametersParameter setup menu Selecting the method of entering the parameterDeviation level options window MANUAL-CALMExample of Manual parameter Setting parameters manuallyRudder Gain Track line and weather setting valueRudder angle and rudder gain setting WeatherGeneral guidelines for setting counter rudder gain General guidelines for setting rudder gainCounter Rudder Auto trim options window Adjusting the sensitivity in monitoring the boat’s trimAuto net towing options window When towing a netNAV Mode Nav mode data source windowSpiral Speed Fish ModeWaypoint Switching Radius of OrbitKey beep options window Setting other menu itemsSystem setup menu Activating key beepLock options window Locking the control unitSetting the panel dimmer Alarm Menu AlarmsAlarm menu Selecting the beep pattern Selecting the alarm buzzerAudio alarm options window Alarm interval options windowSetting the heading deviation alarm Setting the watch alarmWatch alarm options window XTE alarm options window Setting the cross-track error limitSpeed alarm options window Setting the speed alarmDepth alarm options window Setting the depth alarmLog trip options window Setting the temperature alarmSetting the trip distance alarm Temp alarm options windowLog trip clear options window Clearing the trip distanceAlarm Information Alarm messages, their meanings and priorities Alarm messagesCheck point Remedy Maintenance & TroubleshootingPreventive Maintenance Maintenance programTest options window Replacement of FuseDiagnostics Parts Name Type Code No RemarksController Unit Test Processor Unit TestHeading Sensor Test Screen Test Keyboard TestRudder test Rudder Setup and Auto TestSystem Data Clearing MemoriesSystem data screen Error messages Error MessagesError message Meaning Remedy Error messages con’t MN-1 Menu TreeMN-2 Auto mode menuProcessor Unit Control UnitInterface Environmental Conditions Power SupplyCoating Color IN-1 Index
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500 specifications

Furuno 500 is a high-performance marine radar system that represents the forefront of maritime navigation technology. Designed for both commercial and recreational vessels, the Furuno 500 combines advanced radar capabilities with user-friendly features, providing mariners with accurate situational awareness on the water.

At the core of the Furuno 500’s performance is its high-definition radar display. Utilizing a powerful processor, it delivers crisp imagery and enhanced target detection, even in challenging conditions. The 12-inch or 15-inch LED display ensures visibility in bright sunlight while accommodating multiple viewing modes. The radar can switch between various settings, such as long-range scanning and short-range detail, providing flexibility based on navigation needs.

One of the standout features of the Furuno 500 is the advanced Target Tracking technology. This system allows mariners to monitor multiple targets simultaneously, enhancing safety during navigation. With features like Automatic Radar Plotting Aid (ARPA), the radar can predict the movement of vessels and assist in collision avoidance, offering peace of mind while navigating busy waterways.

Furuno has also integrated digital signal processing (DSP) into the 500 series, which enhances the radar’s ability to filter out noise and clutter. This means users can rely on a clear, precise image without distractions that could impact decision-making. Enhanced target resolution helps in identifying various objects and provides essential data for safe navigation.

The Furuno 500 is also compatible with various networking options, allowing easy integration with other onboard systems such as GPS, AIS, and multifunction displays. This connectivity is crucial for modern vessels, enabling a holistic approach to navigation by consolidating information into a single interface.

In addition to its robust technical features, the Furuno 500 is designed for durability and ease of use. The intuitive menu layout and simplified controls allow mariners of all skill levels to operate the system effectively. Its rugged construction ensures reliable performance in harsh marine environments, making it suitable for both commercial applications and leisure crafts.

In summary, the Furuno 500 radar system offers cutting-edge technology combined with practical features that enhance navigational safety and efficiency. Whether navigating busy ports or remote waters, this sophisticated system caters to the needs of modern mariners, making it an essential tool for any serious vessel.
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