Description
Navitron NT888G MK2 Adaptive Autopilot
System Overview & Engineering Architecture
The Navitron NT888G MK2 Adaptive Autopilot is a fully Type Approved installation programmable Adaptive Autopilot designed and developed by Navitron Systems Limited for professional use on Magnetic and/or Gyro based commercial vessels of all types – including High Speed Craft. The NT888G MK2 is a speed adaptive Autopilot which constantly monitors and self-tunes to provide optimum steering performance.
The system is built around a robust control architecture that integrates magnetic and gyroscopic heading inputs with adaptive algorithms to deliver precise steering. The NT888G MK2 Autopilot offers traditional Navitron reliability reinforced by Adaptive control technology, making it suitable for a wide range of vessel types from conventional cargo vessels to high speed passenger ferries underway at 50 knots.
Core Features & Operational Advantages
Adaptive Self-Tuning Control
The NT888G MK2 Adaptive Autopilot features an adaptive self-tuning algorithm that constantly evaluates and updates internal Autopilot Control Parameters. This adaptive mode is designed to provide optimum steering performance across the widest range of vessel types and operating conditions. The system is made possible by an adaptive self-tuning algorithm which is aided by external speed and draft inputs.
Multi-Waypoint Steering
The NT888G MK2 accepts track data for single leg or multi waypoint steering performance. When derived from an Approved ECDIS/Plotter configuration, the system will promote NT888G MK2 controlled constant radius turns and/or complex route manoeuvres as instructed. This capability makes the autopilot ideal for vessels requiring precise route planning and complex manoeuvres.
Programmable Control Features
The NT888G MK2 Autopilot offers traditional Navitron reliability reinforced by Adaptive control technology. Standard features include:
- Programmable Turns: RAD / ROT, Next Course & U Turn
- Automatic Stability: Compensates for Rudder speed variations
- Heading / VDR Output Data: NMEA, Step by Step and Furuno Heading, $XXHTD, $XXRSA VDR formats
- Programmable Limits: Radius and Rate of Turn, Off Course, Course Comparator and Watch Alarm Levels plus Rudder Limit
- Dedicated Next Course and U Turn key functions
- Sensor Coil
- 2 x NMEA
- 1 x StepTrack Steer
- Display: 4.3″ colour display with operator variable backlight illumination
- Installation Mode: Positive or negative mode character presentation selectable
- Maximum Units: 3 Control Units per system
- Operating Voltage: 11-40Vdc
- Heading Inputs: 4 Mag/Gyro (Sensor Coil, 2 x NMEA, 1 x StepTrack Steer)
- Speed Inputs: NMEA & Pulse (4 – 20mA Draft Input)
- Output Data: NMEA, Step by Step, Furuno Heading, $XXHTD, $XXRSA VDR
- Robust Rudder Reference Unit included in standard scope of supply
- Compatible with Single and Dual Solenoid arrangements
- Central Distribution Unit included in standard scope of supply
- Provides power distribution to all control units
- Foot bracket or panel mounting options available
- Standard scope of supply includes Control Unit, Rudder Reference Unit and Central Distribution Unit
- Russian Maritime Register of Shipping (RMRS)
- China Classification Society (CCS)
- High Speed Ferries & Patrol Craft
- Cruise / Passenger Ships
- Coasters, Dredgers, Survey and Support Units
- Ocean Tugs
- Tankers
- Cargo Vessels
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NMEA & Pulse Speed Inputs
The system accepts 4 – 20mA Draft Input for Bowthruster & Rudder Control. Speed inputs are provided via NMEA and Pulse signals, enabling the adaptive algorithm to adjust steering parameters in real time.
4 Mag/Gyro Heading Inputs
The NT888G MK2 accepts 4 Mag/Gyro Heading Inputs including:
NMEA & Step-by-Step Heading Data
Heading Data outputs are available as standard in NMEA, Furuno and Step by Step (5V) formats for Radar stabilization purposes etc.
4.3″ Colour Display
All operational data is shown on the Control Unit 4.3″ colour display which features operator variable backlight illumination and is installation selectable for positive or negative mode character presentation.
Multiple Control Units
A maximum of 3 Control Units may be installed per system and each Control Unit is equally equipped with all control and display facilities which include Operating Mode, Heading, Course Set, Rudder Angle, Rate of Turn and Speed Data.
Compatibility
The NT888G MK2 is immediately compatible with a wide range of steering system types including Single and Dual Solenoid arrangements (11-110Vdc/5A max), voltage (+/-10Vdc) and current (4-20mA) Steering Amplifier and Bowthruster configurations.
Standard Supply Voltage
Standard NT888G MK2 supply voltage range is 11-40Vdc. Optional equipment includes Power Steer Controls, Analogue/Digital Heading Repeaters and Rudder Angle Indicators.
Component Breakdown & Technical Specifications
Control Unit
Rudder Reference Unit
Distribution Unit
Mounting
SOLAS, IMO, IEC & Classification Society Compliance
The Navitron NT888G MK2 is fully MED Module B Type Approved incorporating BAMS compliance with IMO Resolution MSC.302(87) for conventional hull and High Speed Craft (HSC). Further approvals include:
These approvals confirm that the NT888G MK2 meets the strictest international maritime standards and is suitable for use on vessels operating in regulated waters.
Onboard Maintenance & Inspection Standards
The NT888G MK2 requires standard onboard maintenance and inspection to ensure optimal performance. The system’s adaptive control technology and programmable features allow for routine calibration and verification of heading and speed inputs. Regular inspection of the control unit display, heading sensors, and speed inputs is recommended to maintain compliance with SOLAS and classification society requirements.
Technical Support & Port Delivery
For technical support, spare parts, or a quote for the Navitron NT888G MK2 Adaptive Autopilot, contact our technical team today. Visit Contact Seanav Marine Technical Team or email us at service@seanav.org.
Typical Applications
The NT888G MK2 is designed for a wide range of commercial vessel applications including:
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Frequently Asked Questions
Navitron NT888G MK2 Adaptive Autopilot – Frequently Asked Questions
1. What is the Navitron NT888G MK2 Adaptive Autopilot?
The Navitron NT888G MK2 is a speed adaptive Autopilot designed and developed by Navitron Systems Limited for professional use on Magnetic and/or Gyro based commercial vessels of all types – including High Speed Craft. It constantly monitors and self-tunes to provide optimum steering performance.
2. Is the NT888G MK2 Type Approved?
Yes. The NT888G MK2 is fully MED Module B Type Approved incorporating BAMS compliance with IMO Resolution MSC.302(87) for conventional hull and High Speed Craft (HSC). Further approvals include the Russian Maritime Register of Shipping (RMRS) and China Classification Society (CCS).
3. What are the standard heading inputs supported by the NT888G MK2?
The system accepts 4 Mag/Gyro Heading Inputs including Sensor Coil, 2 x NMEA, and 1 x StepTrack Steer. Heading Data outputs are available as standard in NMEA, Furuno and Step by Step (5V) formats.
4. What speed and draft input options are available?
The NT888G MK2 accepts 4 – 20mA Draft Input for Bowthruster & Rudder Control. Speed inputs are provided via NMEA and Pulse signals, enabling the adaptive algorithm to adjust steering parameters in real time.
5. Can the adaptive mode be switched off?
Yes. The Adaptive Mode may be switched off – if required – in favour of manually adjusted PID Control Settings via a built in “Controls” Menu.
6. What is the standard supply voltage range for the NT888G MK2?
The standard NT888G MK2 supply voltage range is 11-40Vdc. Optional equipment includes Power Steer Controls, Analogue/Digital Heading Repeaters and Rudder Angle Indicators.
7. How many Control Units can be installed per system?
A maximum of 3 Control Units may be installed per system and each Control Unit is equally equipped with all control and display facilities.
8. What is the display size and features of the Control Unit?
The Control Unit features a 4.3″ colour display with operator variable backlight illumination and is installation selectable for positive or negative mode character presentation.
9. What steering system types is the NT888G MK2 compatible with?
The NT888G MK2 is immediately compatible with a wide range of steering system types including Single and Dual Solenoid arrangements (11-110Vdc/5A max), voltage (+/-10Vdc) and current (4-20mA) Steering Amplifier and Bowthruster configurations.
10. What are the typical applications for the NT888G MK2?
The NT888G MK2 is designed for High Speed Ferries & Patrol Craft, Cruise / Passenger Ships, Coasters, Dredgers, Survey and Support Units, Ocean Tugs, Tankers, and Cargo Vessels.
