Multisensor Speed Logs address maritime requirements.

Press Release Summary:

Suited for marine applications, NAVIKNOT 600 series is based on satellite speed sensor that yields dual-axis speed over ground. Satellite speed log can serve as standalone device or be integrated with single-axis electromagnetic or Doppler speed log; 3-way satellite-electromagnetic-Doppler combination provides built-in flexibility and redundancy. Products use twin GPS antenna array to measure ship heading, velocity, course, and attitude with accuracy of ±1% or 0.1 knots.

Original Press Release:

Northrop Grumman Introduces New Series of Multisensor Speed Logs for Maritime Market

LONDON, September 24 --

Northrop Grumman Corporation (NYSE: NOC) is introducing a new family of multisensor marine speed log products at the 2008 SMM maritime technology exhibition in Hamburg, Germany this month.

The NAVIKNOT 600 series of products, which are being marketed under the Sperry Marine brand, are based on a new satellite speed sensor that yields dual axis speed over ground.

The satellite speed log can serve as a standalone device or be integrated with a single-axis electromagnetic or Doppler speed log. The three-way satellite-electromagnetic-Doppler combination provides maximum built-in flexibility and redundancy.

The NAVIKNOT 600 systems use a twin GPS antenna array to measure the ship's heading, velocity, course and attitude. The unit's processor uses the GPS data, integrated with output from rate gyros, to calculate longitudinal and transverse speed over ground with accuracy of +/- 1 percent or 0.1 knots, whichever is greater. In the docking mode, the display shows a graphic diagram with rate of turn, bow and stern side-to-side speed over ground and other useful data.

Speed log data is shown on a large, bright, high-resolution display screen. A range of remote control and digital and analog repeater displays are also offered.

"The new NAVIKNOT 600 series products augment and enhance our lineup of NAVIKNOT marine speed logs, which have established a longstanding reputation for accuracy and reliability," said J. Nolasco DaCunha, vice president of Sperry Marine. "They are designed for easy, low-cost installation on all types and sizes of vessels, including pleasure yachts, commercial ships and naval platforms."

The NAVIKNOT multisensor speed logs are type approved by Germanischer Lloyd to the European Union Marine Equipment Directive 96/98/EC.

Sperry Marine, headquartered in Charlottesville, Va., and with major engineering and support offices in New Malden, United Kingdom and Hamburg, Germany, provides smart navigation and ship control solutions for the international marine industry with customer service and support through offices in 16 countries, sales representatives in 47 countries and authorized service depots in more than 250 locations worldwide.

Northrop Grumman Corporation is a global defense and technology company whose 120,000 employees provide innovative systems, products, and solutions in information and services, electronics, aerospace and shipbuilding to government and commercial customers worldwide.

For commercial sales inquiries, contact Northrop Grumman Sperry Marine by phone, +1-434-974-2656 or by e-mail, For military sales inquiries, call +1-434-974-2134 or e-mail Visit our Web site at

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