SPERRY MARINE - NAVIGAT X MK I

The NAVIGAT X MK 1 Gyro Compass is the first of its type to be designed as a single unit and can be installed on any bridge on any vessel.
 
North Stabilization During Short Power Failures
 
With over 100 years of experience in the marine gyro compass industry, Northrop Grumman Sperry Marine delivers an advanced low weight marine gyrocompass. The unique method of supporting the system by means of mere buoyancy, ensures north stabilization during short power failures.
The Gyro Compass from Northrop Grumman Sperry Marine ensures high accuracy and maximum reliability under all environmental conditions. The Gyro Compass uses a data transmission technology instead of using slip rings. Providing proven technology and long maintenance periods, the Gyro Compass is a long-time secure investment, with low operation costs.
Extreme Weather Conditions
 
The NAVIGAT X MK 1 Mod 7 marine gyro compass provides highly accurate heading information in extremely heavy seas. The system is equipped with a special gyrosphere container, with a unique centering pin retaining arrangement that is mounted in an additional gimbal system. This allows an almost unlimited freedom of roll and pitch (±90°).
 
Key Benefits of Gyro Compass NAVIGAT X MK 1:
 
·        Complies with IMO regulations A.424(IX), A.694(17), A.821(19) - High-Speed Craft (HSC) and ISO 8728
·        Comprised of one single unit
·        Type-approved rate-of-turn output
·        Gyro system remains north stabilized during power interruptions of up to 3 minutes
·        Short maintenance and repair times - low service costs
 
 

Overview
Specifications
Documents

 Gyro Compass Features:

  • Automatic static north speed error correction - no extra unit required
  • High speed transmission and follow-up system 100° / sec
  • Highly accurate digital heading data transmission by shaft encoder
  • Twin rotors (19,000 rev / min) and liquid damping system eliminate latitude error
  • A ±180° electronic alignment error correction in setup program (mechanical correction is not necessary)
  • MTBF of 40,000 hours & Maintenance intervals of 18 months
  • Insensitive to horizontal acceleration
  • Will drive a maximum of 12 analogue repeaters
  • Two independent 6 steps/degree heading outputs (0.5 A)
 
Outputs to Navigation Data Printer:
  • Heading
  • Heading source gyro/magnetic
  • Rudder angles of two independent rudders
  • Automatic emergency power changeover and status alarm
  • Single point suspension of the gyrosphere container eliminates the well-known adverse effects associated with gimbals
 

 See below a list of the NAVIGAT X MK 1 system configurations:

 

PERFORMANCE  
Linear mean settle  
Point error < 0.1° secant latitude
Static error < 0.1° secant latitude
Dynamic error < 0.4° secant latitude (in sea state conditions)
 
FREEDOM OF ROLL AND PITCH  
NAVIGAT X MK 1 Mod 7 ±90°
NAVIGAT X MK 1 Mod 10 ±40°
 
POWER REQUIREMENTS
24 VDC (18 V to 36 V) and / or
115/230 VAC ±10%
50 Hz / 60 Hz
The single unit gyrocompass includes automatic switchover to 24 V emergency power supply in accordance with GMDSS Rules for INMARSAT/SES Terminals.
 
OPERATIONAL DATA  
Ambient temperature range operation -10°C to +55°C
storage -25°C to +70°C (without supporting fluid)
Settling time < 3 hours (0.7°)
Gyrocompass follow-up rate 100°/sec.
Heading display digital with 4 digits
Power failure alarm
visible and audible and potential-free contact,
max. 30 VDC / 1.0A, max. 125 VAC / 0.5A
max. current 2 A,max. voltage 250 V
Mean time between failure 40,000 hours (MTBF)
North speed error correction static, input IEC 61162-1, or manual
Built-in test equipment standard
 
POWER CONSUMPTION    
Start-up 80 W 125 VA
Operation 45 W 75 VA
Each analogue repeater 7 W 7 VA
Each universal digital repeater 5 W 5 VA
 
PROTECTION GRADE  
Gyrocompass IP 23 in accordance with IEC / EN 60529
 
MAGNETIC CLEARANCE TO  
Standard magnetic compass 0.6 m
Steering magnetic compass 0.4 m
 
REDUCTED MAGNETIC CLEARANCE TO
Standard magnetic compass 0.3 m
Steering magnetic compass 0.3 m
 
DIMENSIONS  
Width 404 mm
Height 520 mm
Depth 420 mm
 
WEIGHT  
NAVIGAT X MK 1 Mod 10 25 kg
NAVIGAT X MK 1 Mod 7 28 kg