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The Walker 7070 W Mk2 is an integrated marine navigation, wind, and meteorological system manufactured by John Lilley & Gillie Ltd. (Walker Marine Technology) in the United Kingdom. Building upon the type-approved Walker 7070 Mk2 Electromagnetic (EM) Speed Log, the 7070 W Mk2 consolidates Speed Through Water (STW), relative/true wind data, and atmospheric weather parameters into a unified bridge monitoring architecture suitable for commercial merchant vessels, naval ships, and offshore platforms.
The system processes inputs from Walker EM hull transducers (fixed P57 or retractable P99 with P98 sea valve), ultrasonic or mechanical masthead wind sensors, and combined weather sensor towers (measuring barometric pressure, air temperature, relative humidity, and optional seawater temperature). Utilizing the optional Walker P1066 True Wind Interface Unit, the 7070 W Mk2 calculates true wind speed and direction by processing log STW and vessel heading data. Output data is distributed across standard DIN 144 OLED bridge display indicators and transmitted via NMEA 0183 serial connections to RADAR, ECDIS, VDR, and Integrated Bridge Systems (IBS).
Key Features:
• Integrated Speed, Wind & Weather Suite: Combines EM speed log monitoring, relative/true wind tracking, and barometric/environmental weather sensing into a cohesive bridge system.
• True Wind Calculation: Integrates with the Walker P1066 module to compute true wind speed and direction using speed log STW and heading inputs.
• Comprehensive Weather Parameters: Monitors barometric pressure, pressure trend, air temperature, relative humidity, and optional seawater temperature via dedicated sensors.
• Flexible Sensor Compatibility: Operates with fixed (P57) or retractable (P99) EM hull sensors, and solid-state ultrasonic (P292/P392) or mechanical (P296) wind mastheads.
• Dedicated Modular Displays: Standard DIN 144 (144 x 144 mm) OLED/LED bridge indicators provide clear visual readouts with front-panel dimming control.
• Standard NMEA 0183 Serial Output: Generates IEC 61162-1 serial sentences ($VMVBW, $VMTWV, $WIMWV, $WIMWD, $WIXDR) for shipwide system distribution.
| Attribute | Specification Details |
| Manufacturer | John Lilley & Gillie Ltd. / Walker Marine Technology |
| Model / Part Number | Walker 7070 W Mk2 (System Integration Package) |
| Item Type | Integrated Electromagnetic Speed Log, Wind & Weather Monitoring System |
| Speed Range | -20 to +80 knots (Forward & Astern STW) |
| Wind Parameters | Relative / True Wind Speed (0–120 kts) & Direction (0°–359°) |
| Weather Parameters | Barometric Pressure, Pressure Trend, Air Temp, Humidity, Water Temp (Optional) |
| Core Electronics Unit | P303 stainless steel wall-mount enclosure (IP66) |
| Bridge Indicators | DIN 144 x 144 mm OLED/LED modular displays with dimmer control |
| Hull Sensor Compatibility | P57 Fixed or P99 Retractable EM log sensors (P98 sea valve) |
| Weather Sensor Array | P1003 integrated weather tower / ultrasonic wind masthead |
| True Wind Module | P1066 True Wind Interface Unit (optional) |
| Data Output Interfaces | NMEA 0183 (IEC 61162-1 / RS-422) & 200 ppNM distance relay contacts |
| Operating Power | 110V / 220V AC (30 VA) or 24V DC (20 W) |
| Certifications | MED (Wheelmark) Type Approved (Log element), EN 60945, IEC 61162-1 |
| Application | Deep-sea commercial merchant ships, naval auxiliaries, research & offshore vessels |
| Country of Origin | United Kingdom |
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