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Navitron NT995G Autopilot.

The NT995G Autopilot System. Fully MED Module B Type Approved incorporating BAMS compliance with IMO Resolution MSC.302(87) the NT995G is aimed at ocean going vessels of all types and sizes.

  • Dual Mag Inputs: Sensor Coil and/or NMEA
  • Dual Gyro Inputs: 1:1 Synchro and/or NMEA
  • Track Steer: Multi Waypoint Steering via Plotter/ECDIS Data
  • Programmable ROT: (Degrees/Min)
  • Built in Off Course Alarm
  • Automatic Stability: Compensates for Rudder Speed variations
  • Heading / VDR out: NMEA, Step by Step and Furuno Heading ($xxHTD & $xxRSA VDR)
  • Fully BAMS Compatible: to IMO Res MSC.302(87)

The NT995G Autopilot incorporating the NT1000 DDU can be supplied for immediate compatibility with most Gyro compass and Steering System types rendering it entirely suitable for both new build and retrofit installations. The NT995G Autopilot also features Automatic Waypoint Steering based on “Heading to Steer” Serial Data received from proprietary Track Plotters/ECDIS systems etc. ($xxHTC, $xxHSC,
$xxAPB sentences).

Standard Features

The NT995G Autopilot System. Fully MED Module B Type Approved incorporating BAMS compliance with IMO Resolution MSC.302(87) the NT995G is aimed at ocean going vessels of all types and sizes.

  • Dual Mag Inputs: Sensor Coil and/or NMEA
  • Dual Gyro Inputs: 1:1 Synchro and/or NMEA
  • Track Steer: Multi Waypoint Steering via Plotter/ECDIS Data
  • Programmable ROT: (Degrees/Min)
  • Built in Off Course Alarm
  • Automatic Stability: Compensates for Rudder Speed variations
  • Heading / VDR out: NMEA, Step by Step and Furuno Heading ($xxHTD & $xxRSA VDR)
  • Fully BAMS Compatible: to IMO Res MSC.302(87)

The NT995G Autopilot incorporating the NT1000 DDU can be supplied for immediate compatibility with most Gyro compass and Steering System types rendering it entirely suitable for both new build and retrofit installations. The NT995G Autopilot also features Automatic Waypoint Steering based on “Heading to Steer” Serial Data received from proprietary Track Plotters/ECDIS systems etc. ($xxHTC, $xxHSC,
$xxAPB sentences).

Technical Specification

1. Electrical & Power Specifications

Parameter Specification
Operating Voltage 11V DC to 40V DC (Main power supply with built-in power failure monitoring)
Drive Outputs Solid-state FET switching outputs (+/- 11–40V DC) or potential-free dry contact relays
Solenoid Drive Current Max. 5A continuous output
Proportional Drive Output Compatible with optional Navitron Steering Amplifier/Interface cards (e.g., NT990ASI for $\pm 10\text{V DC}$ / $4\text{–}20\text{ mA}$)
Display Panel NT1000 DDU (Digital Display Unit): 4.3-inch color graphic display showing set course, Rate of Turn (ROT), actual heading, rudder angle, and BAMS alert status
Auxiliary Repeater Servo-drive analogue heading repeater unit for Standby mode

2. Heading Inputs & System Interfaces

Interface Type Supported Protocol / Signal
Dual Magnetic Inputs Direct Navitron Sensor Coil (NT920HSC / HSC2) and/or NMEA 0183 fluxgate input
Dual Gyrocompass Inputs Direct 1:1 Synchro input and/or RS-422 NMEA 0183 ($HEHDT, $THS, $HCHDT)
Track Steering Input NMEA 0183 ($xxHTC, $xxHSC, $xxAPB, $xxXTE) for multi-waypoint ECDIS / Track Plotter steering
Data Sentence Outputs NMEA 0183 ($xxHTD, $xxRSA), Step-by-Step, and Furuno Heading format for VDR, RADAR, and repeaters
BAMS Interface IEC 61162-1 or -2 serial connection to Ship Bridge Alert Management system (IMO Res. MSC.302(87))
BNWAS Connection Dedicated interface contact for BNWAS (Backup Navigator Call) integration

3. Operational Features & Performance Parameters

Parameter Specification
Steering Control Modes AUTO (Heading Control), STBY (Manual Helm), TRACK (ECDIS Waypoint Steering), DODGE
Programmable ROT User-configurable Rate of Turn (Degrees/Minute) for controlled course changes
Automatic Stability Control Dynamic compensation for rudder speed variations
Course Setter Spring-loaded rotary course setter knob
Alarms & Diagnostics Built-in Off-Course Alarm, Heading Loss, Power Fail, and full BAMS alert messages
Rudder Feedback Unit Connects to heavy-duty potentiometric rudder reference units (NT920RTU / NT990RTU)

4. Physical Dimensions & Enclosure Characteristics

Parameter Specification
Autopilot Control Unit Dims $296\text{ mm (W)} \times 176\text{ mm (H)} \times 110\text{ mm (D)}$
NT1000 DDU Display Dims $176\text{ mm (W)} \times 144\text{ mm (H)} \times 60\text{ mm (D)}$
Mounting Options Console panel flush mount or trunnion bracket mount
Construction Marine-grade anodized enclosure with sealed keypads

5. Type Approvals & Standards Compliance

  • Manufacturer Part Number: NT995G

  • Country of Origin: United Kingdom (UK)

  • MED Module B Approval: Wheelmarked for ocean-going commercial vessels of all types and sizes

  • IMO Standards: Compliant with IMO Res. A.342(IX), MSC.64(67) Annex 3, ISO 11674 (2019), and ISO 16329

  • BAMS Compliance: IMO Res. MSC.302(87)

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