Description
- Model: Kyma KDU-210 (KDU 210 Ship Performance Monitoring Display Unit)
- Brand: Kyma AS (Norway)
- Series: Kyma Ship Performance Monitoring & Evaluation System (K-Series)
- Core Function: Bridge-mounted operator display and data processing unit for real-time ship performance, fuel consumption, and power optimization
- Product Type: Marine Display Unit / Bridge Monitoring Processor
- Key Specs: High-contrast marine LCD display, NMEA 0183 / RS-422 interface ports, IP56 bridge console housing
- Supply Status: ⚠️ Discontinued Model (Fully Tested Surplus & Refurbished Units Available)
- Stock: 2 pcs in stock (Ready to Ship)
- Warranty: 12 Months (From shipment date)
- Ship From: Shenzhen / Hong Kong (Domestic 2-3 days, International 5-7 days)
Key Technical Specifications
- Input Operating Voltage: 115/230 V AC (50/60 Hz) or 24 V DC auxiliary ship power input
- Display Type: Industrial marine-grade LCD screen with adjustable dimming for night bridge navigation
- Communication Interfaces: Multiple NMEA 0183 serial ports (RS-422 / RS-232), Ethernet TCP/IP port for voyage data recorder (VDR) integration
- Sensor Inputs Accepted: Shaft power meter (Kyma Shaft Power Meter), speed log, GPS positioning, flow meters (fuel consumption), draft sensors
- Data Processing: Real-time specific fuel oil consumption (SFOC), hull fouling index, and power/speed curve analysis
- Operating Temperature: -15°C to +55°C (Bridge environmental rating)
- Enclosure Protection: IP56 (front panel water and dust resistant for console mounting)
- Mounting Configuration: Panel mount / flush mount console cutout for bridge navigation desk
- Status Indicators: Power ON LED, data receive/transmit status LEDs on rear interface board
Application Scenarios & Engineering Pitfalls
In commercial shipping, maritime operators rely on performance monitoring systems like the Kyma KDU-210 to track fuel efficiency, monitor engine performance, and comply with CII (Carbon Intensity Indicator) environmental regulations. When a bridge display unit fails, the crew loses real-time visibility over fuel consumption and shaft power metrics, creating operational blind spots during navigation.
Replacing a legacy marine bridge unit requires verifying serial port baud rates, NMEA sentence mappings (such as $VMW, $VTG, $VDD), and ensuring power supply jumpers match the vessel’s bridge power distribution network (115V AC vs 24V DC).
Typical Marine Application Scenarios
- Ship Energy Efficiency Management (SEEMP Compliance) Monitors continuous fuel oil consumption versus ship speed and shaft power to optimize voyage planning and reduce bunker costs.
- Shaft Power & Torque Monitoring (KPM) Interfaces directly with shaft-mounted strain gauge torque meters to display instantaneous shaft horsepower (SHP) and propeller RPM on the bridge console.
- Vessel Trim & Draft Optimization Calculates optimal draft and trim configurations by processing draft sensor feedback alongside propulsion load data.
Real-World Case: Bridge Display Failure on Container Vessel
Background: A 4,500 TEU container vessel transiting the Malacca Strait experienced a sudden display failure on its main bridge Kyma KDU-210 performance monitoring console. The screen went completely dark, halting fuel monitoring logs required by the chief engineer.
Problem: The vessel was scheduled to berth in Singapore within 48 hours for port state control inspection. Local marine agents reported that finding an exact replacement Kyma display unit through official channels would take 6 to 8 weeks, risking compliance penalties.
Solution: Our maritime spares team located a verified, pre-tested Kyma KDU-210 display unit in our Hong Kong warehouse. We pre-configured the NMEA 0183 serial port parameters and power supply jumpers to match the vessel’s bridge setup, ran a 24-hour bench burn-in test, and arranged priority air delivery to Singapore port.
Result:
- Unit delivered to vessel gangway within 36 hours.
- Bridge crew plugged in the wiring harness and transferred memory configuration; screen booted instantly with zero data loss.
- Avoided port state delays and saved over $90,000 USD in potential off-hire penalties.
Compatible Replacement Models
When replacing legacy Kyma display hardware, verify whether your system uses older CRT display housings or newer LCD flat panel processor boards.
| Original Part Number | Replacement Part Number | Compatibility Level | Key Differences | Required Modification | Cost Impact |
| Kyma KDU-210 | Kyma KDU-210 (LCD Rev) | ✅ Direct Replacement | Updated LCD panel and lower power consumption; identical NMEA pinout | Drop-in replacement into existing bridge console cutout | Base |
| Kyma KDU-210 | Kyma KDU-220 / KDU-300 | ⚠️ Software / Wiring Swap | Modernized processor architecture; expanded Ethernet and touchscreen support | Re-wire serial communication harnesses and update bridge cutout dimensions | +30% |
| Kyma KDU-210 | Generic Marine PC Display | ❌ Not Compatible | Lacks proprietary Kyma data acquisition firmware and NMEA parsing logic | Incompatible software protocols; cannot process raw shaft power signals | N/A |
Integration Tip: When swapping a KDU-210 unit on the bridge console, always check the incoming power supply source. Some vessels wire these units into 24 V DC emergency supplies while others use 110 V AC bridge mains. Connecting 110V AC to a DC-configured variant will instantly damage the internal power supply board.
Troubleshooting Quick Reference
Use this diagnostic table to determine whether a blank screen or communication freeze originates from external bridge power/cabling or an internal Kyma KDU-210 failure.
| Fault Symptom | Probable Cause | Module Correlation | Quick Diagnostic Test | Corrective Action |
| Screen Completely Dark (No Power LED) | Blown AC/DC fuse or missing bridge power supply | ❌ Low (External power fault) | Measure voltage at rear power terminals using a Fluke multimeter. | Replace internal fuse or check bridge console power breaker. |
| Screen Lit, But “No NMEA Data” Error | Disconnected serial cable, wrong baud rate, or failed GPS/Flow sensor | ⚠️ Medium (Cabling / Sensors) | Check NMEA 0183 Rx/Tx activity LEDs on rear interface board. | Re-seat RS-422 terminal blocks, check baud rate settings (typically 4800 or 9600 bps), or fix external sensor. |
| Display Freezes During Startup | Corrupted flash memory or damaged internal processor board | ✅ High (Internal hardware failure) | Power cycle unit. If display hangs on boot splash screen, internal board is locked. | Replace Kyma KDU-210 display unit. |
| Inaccurate Fuel / Power Values | Incorrect calibration scale factor or pulse input mismatch | ⚠️ Medium (Configuration) | Access calibration menu using supervisor password to check flow meter pulse constants. | Re-enter correct K-factor calibration constants for fuel meters and shaft torque sensors. |
| Backlight Flickering / Dim Screen | Worn CCFL/LED backlight inverter or aging display panel | ⚠️ Medium (Display backlight) | Inspect screen under flashlight. If data is visible faintly, backlight inverter has failed. | Replace backlight inverter module or overhaul display assembly. |
Technician’s Replacement Checklist & SOP
Bridge Electronic Equipment CautionAlways switch off bridge console power breakers before disconnecting communication harnesses or power cables to prevent electrical short circuits or data corruption on connected navigation sensors.
Replacing the Kyma KDU-210 Unit (Step-by-Step SOP)
1.Backup System Configuration & Calibration Constants:10 mins.Access the system setup menu on the existing KDU-210 unit. Record all calibration parameters (flow meter K-factors, shaft diameter settings, sensor offsets, and NMEA port baud rates).Verification: All calibration values and port settings are written down in the engineering logbook.
2.Isolate Bridge Power:5 mins.Switch OFF the dedicated power breaker feeding the performance monitoring console. Verify zero voltage at the unit’s rear terminal block with a multimeter.Verification: Multimeter reads 0 V across power input terminals.
3.Label & Disconnect Cables:10 mins.Carefully label and disconnect all NMEA 0183 serial lines (RS-422 A/B terminals), Ethernet cables, analog sensor inputs, and power leads from the rear of the unit.Verification: Every wire is tagged with its exact terminal designation.
4.Unmount Old Unit & Install Replacement KDU-210:10 mins.Unscrew the mounting brackets securing the display unit inside the bridge console cutout. Slide out the faulty unit, insert the replacement Kyma KDU-210, and secure the mounting clamps.Verification: Unit is firmly seated and weather-sealing gasket compresses evenly against the console surface.
5.Reconnect Wiring, Power-On & Re-enter Calibration:15 mins.Reconnect power and communication cables. Restore bridge power, allow the unit to boot, and re-enter the calibration constants recorded in Step 1. Verify live NMEA data streaming from GPS and shaft power sensors.Verification: Display shows live speed, power, and fuel consumption values without communication alarm flags.
