Furuno NAVpilot-500 manual General guidelines for setting rudder gain, Counter Rudder

Page 44

4. MENU OPERATION

Set rudder gain so that the boat does not make frequent yaw. The figure shown below provides general guidelines for setting rudder gain.

fast

 

 

 

 

 

 

Boat's Speed

 

 

 

 

 

 

slow

 

 

 

 

 

 

 

 

 

 

 

 

 

 

calm

 

 

 

 

 

Sea State

 

 

 

 

 

 

rough

 

 

 

 

 

 

 

 

 

 

 

 

 

light

 

 

 

 

 

Load Condition

 

 

 

 

heavy

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

low

 

 

 

 

 

RUDDER GAIN

 

 

 

high

 

 

 

 

 

 

 

 

 

 

General guidelines for setting rudder gain

 

 

 

COUNTER RUDDER

If the boat is heavily loaded, the heading could change excessively because of inertia. This phenomenon causes the vessel to “overshoot” the intended course. If this happens, the NAVpilot-500 will steer the rudder to the opposite side and the heading will turn in opposite direction excessively again. In an extreme case the heading oscillates several times until it finally settles in the new course. An adjustment known as “counter rudder” prevents this kind of oscillation.

Counter rudder is usually not required for small boats. When your boat zigzags a lot before settling in the new course, increase the counter rudder setting.

 

Large course error

Counter rudder:

Intended

small setting

course

Counter rudder: proper setting

The counter rudder feature functions to smoothly return ship's heading toward intended course.

slow

 

 

 

 

 

Boat's Speed

 

 

 

 

fast

 

 

 

 

 

 

 

 

 

 

 

 

light

 

 

 

 

 

Load Condition

 

 

 

 

heavy

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

low

 

 

 

 

COUNTER RUDDER

 

 

high

 

 

 

 

 

 

 

 

General guidelines for setting counter rudder gain

4-6

Page 43 Page 45
Image 44
Page 43 Page 45
Contents Autopilot 00014698405 Safety Instructions Table of Contents Alarms IiiWord to the Owner of the NAVpilot-500 FeaturesForeword System Configuration System configuration of NAVpilot-500This page is intentionally left blank Principle of the Autopilot Principle of AutopilotPrinciple of Operation Control unit, front view Basic OperationOperating Controls Startup sequence Turning the power offTurning On/Off Adjusting Brilliance and Contrast Choosing the display modeDisplays Contrast, brilliance windowSelecting data Analog indicator selection Displayed dataConnection of Terflex linear sensor RED WHT BLKSteering Modes Stby ModeStby mode display ex. Normal Display Auto mode display Normal display Auto ModeUsing the Auto mode Advanced Auto mode Advanced Auto mode display ex. Normal displayEnabling the Advanced Auto mode Advanced auto options windowNAV mode display Normal display NAV ModeStarting the NAV mode NAV mode, Course and XTE Selecting sailing method of NAV modeNav mode options window Switching waypoint Waypoint switching options windowSteering Mode Turn Mode Turn menu180º Turn for Auto mode only Example of 180º maneuver in turn mode360º Turn for Auto mode only Example of 360º maneuver in turn modeOrbit Example of orbit maneuver ex. clockwiseTo escape from the Orbit while it is in use, press Stby key Example of spiral maneuver in turn mode SpiralSteering Mode Example of Figure Eight in NAV mode Figure EightNavigating to TLL point TLL navigationRemote Mode Dial type remote controller FAP-5551Turning power off dial type Rotating dialTurning power on, button and lever type remote controllers NFU No Follow-Up mode displayOperating remote controller ex. button and lever types Turning power off, button and lever type remote controllersDodge mode display Dodge ModeDodging in Stby mode Dodging in Auto or NAV mode 359This page is intentionally left blank Menu Operation Stby Mode MenuStby mode menu Setting parameters Parameter setup menuSelecting the method of entering the parameter Sea state options windowMANUAL-CALM Deviation level options windowSetting parameters manually Example of Manual parameterTrack line and weather setting value Rudder angle and rudder gain settingWeather Rudder GainCounter Rudder General guidelines for setting rudder gainGeneral guidelines for setting counter rudder gain Adjusting the sensitivity in monitoring the boat’s trim Auto trim options windowWhen towing a net NAV ModeNav mode data source window Auto net towing options windowFish Mode Waypoint SwitchingRadius of Orbit Spiral SpeedSetting other menu items System setup menuActivating key beep Key beep options windowLocking the control unit Lock options windowSetting the panel dimmer Alarm menu AlarmsAlarm Menu Selecting the alarm buzzer Audio alarm options windowAlarm interval options window Selecting the beep patternWatch alarm options window Setting the watch alarmSetting the heading deviation alarm Setting the cross-track error limit XTE alarm options windowSetting the speed alarm Speed alarm options windowSetting the depth alarm Depth alarm options windowSetting the temperature alarm Setting the trip distance alarmTemp alarm options window Log trip options windowClearing the trip distance Log trip clear options windowAlarm Information Alarm messages Alarm messages, their meanings and prioritiesMaintenance & Troubleshooting Preventive MaintenanceMaintenance program Check point RemedyReplacement of Fuse DiagnosticsParts Name Type Code No Remarks Test options windowHeading Sensor Test Processor Unit TestController Unit Test Keyboard Test Screen TestRudder Setup and Auto Test Rudder testSystem data screen Clearing MemoriesSystem Data Error message Meaning Remedy Error MessagesError messages Error messages con’t Menu Tree MN-1Auto mode menu MN-2Interface Control UnitProcessor Unit Coating Color Power SupplyEnvironmental Conditions Index IN-1
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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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