The NAVIKNOT Multisensor Speed Log Series is a new generation in a long line of successful Northrop Grumman Sperry Marine speed logs. The 350, 450 and 600 series offer unlimited flexibility and have been designed with the most modern computer tools for application on all types and sizes of vessels including cruise ships, container ships, tankers, megayachts and a wide variety of other crafts, both new build and retrofit.

Flexible and Innovative

The speed log measurement capability at slow speed is vital for precise docking of tankers to oil loading and unloading facilities, as well as safe navigation in narrow channels or straits. Operation at high speed assists economical cruising in open seas. While retaining the measurement accuracy the time for installation and space required for installation will be reduced.

Control and Display Units

The innovative NAVIKNOT Multisensor Speed Log Series features two different-sized Control and Display Units (CDU) each with a large colour TFT display, and utilizes satellite-based technology (GPS) in addition to the traditional Doppler and Electromagnetic Sensors to provide the user with high-accuracy displays of dual-axis ground speed and/or single-axis water speed.

NAVIKNOT Control and Display Unit (CD) in a housing with bracket attachment

NAVIKNOT Control and Display Unit (CD) in a housing with bracket attachment

Full Features of the NAVIKNOT series:

  • Speed accuracy ± 1% or 0.1 kn whichever is greater
  • Large colour TFT display
  • Display colours selectable by the operator
  • Double-end ferry mode
  • Miles counter (one total counter and one daily counter)
  • Separate damping for speed display and outputs (0 – 99 sec.)
  • Displays longitudinal and transverse speeds (transverse speed 600 S, 600 SE & 600 SD only)
  • Remote control and display units are available in different sizes
  • Integrated take-over function Remote-to-Master


For more information about Northrop Grumman Sperry Marine’s NAVIKNOT Multisensor Speed Log, please contact us.