Furuno NAVpilot-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 Autopilot 00014698405 Safety Instructions Table of Contents Iii AlarmsForeword FeaturesWord to the Owner of the NAVpilot-500 System configuration of NAVpilot-500 System ConfigurationThis page is intentionally left blank Principle 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 selectionRED WHT BLK Connection of Terflex linear sensorStby 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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NAVpilot-500 specifications

The Furuno NAVpilot-500 is an advanced autopilot system designed for a range of vessels, from small boats to larger commercial ships. This cutting-edge technology provides reliable steering assistance, ensuring enhanced navigational safety and improved operational efficiency. With its versatile functionalities, the NAVpilot-500 has made a significant impact in the maritime industry.

One of the standout features of the Furuno NAVpilot-500 is its use of FURUNO's proprietary technology, including advanced sensors and algorithms. This system leverages a dual-processor architecture, allowing for seamless performance in diverse sea conditions. The NAVpilot-500 is capable of handling course control with impressive precision, adjusting automatically to wind and waves to maintain a steady course.

Another notable aspect of this autopilot system is the intuitive user interface. The large, sunlight-readable display provides easy access to all functionalities and settings, making it user-friendly for operators of varying expertise levels. The touchscreen interface allows for straightforward navigation through menus, ensuring that users can quickly adapt to changing conditions on the water.

The NAVpilot-500 features a comprehensive set of integration options, including compatibility with various types of navigation and communication equipment. This capability allows for effective integration with Furuno's proprietary chart plotters and radar systems, ultimately enhancing situational awareness and safety while navigating.

Moreover, the system offers customizable autopilot modes, including modes for auto and standby operation. This versatility allows users to choose the most suitable steering method for their specific needs, whether for leisurely cruising or during heavy-duty fishing operations. The NAVpilot-500 also incorporates advanced safety features, such as target tracking and collision avoidance, ensuring that operators remain vigilant and prepared for any potential hazards.

Furuno's NAVpilot-500 is engineered for durability and reliability, meeting the rigorous standards set by the maritime industry. Robust construction allows it to withstand harsh marine environments, providing peace of mind to operators. With its blend of advanced technology, user-friendly design, and reliable performance, the NAVpilot-500 stands out as one of the leading autopilot systems in the market today. Whether for leisure or professional use, this system brings a level of sophistication and safety that enhances navigation experiences across various maritime applications.
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