ENGLEWOOD, COLO., April 9, 2008 - Excell Marine, a McNational, Inc. subsidiary, will deploy Jeppesen Workboat Navigator across its fleet of towboats. This new offering from Jeppesen Marine is a professional information service developed specifically for commercial vessels operating in coastal and inland waterways.

"Excell Marine is proud to install such a state-of-the-art system like Jeppesen Workboat Navigator. Besides enhancing safety for our mariners and the environment, this system will save fuel, improve ton miles and increase our ability to navigate safely. By partnering with Jeppesen, Excell has tapped in to a great tradition of navigation excellence and expertise that far exceeds any other system available on the market today," said Captain Charlie Ritchie, Vessel Operations manager for McNational, Inc.

With headquarters in Cincinnati, Ohio and offices in Paducah, Ky., Excell Marine provides line haul towing and charter services for the marine industry on the Ohio, Upper and Lower Mississippi, Tennessee and Missouri Rivers. Excell Marine is a subsidiary of McNational, Inc. which operates shipyards and fleeting services throughout the inland waterway systems.

Jeppesen Workboat Navigator is an information service that provides mariners with a combination of detailed vector-based digital marine charts, location-based data, such as Notices to Mariners, and input from onboard sensors, such as GPS, radar, AIS, heading sensors and onboard cameras. Jeppesen Workboat Navigator brings together numerous information sources for unparalleled situational awareness and weekly data updates so charts remain current and provide the most accurate information possible.

Jeppesen Workboat Navigator delivers a host of advanced features including River ETA to assist with planning arrival times, River AIS to predict passing locations, the ability to easily keep AIS information up to date with an easy-to-use interface and much more. Comprehensive 24x7 service and support is also included.

"We are excited to see the momentum that is being generated with our growing customer base for Jeppesen Workboat Navigator," said Joel Meltzner, program manager, Jeppesen Marine. "The more operators that utilize technology like Workboat Navigator, the safer and more efficient the entire system of river and inland transportation will be."

Jeppesen Marine is a market-leading provider of digital navigation solutions, based on worldwide vector chart data type approved to ISO19379, meteorological information and transmission technologies. Through its wide range of products and services, Jeppesen Marine serves numerous markets from light marine, to today's safety-conscious commercial shipping industry operating on the inland/coastal waterways as well as high seas. Jeppesen Marine is chartered with the same underlying values that launched Jeppesen in 1934 - improving safety and efficiency through innovative navigation solutions.

For more than 70 years Jeppesen has made it possible for pilots and their passengers to safely and efficiently reach their destinations. Today this pioneering spirit continues as Jeppesen delivers essential information and optimization solutions to improve the efficiency of air, sea and rail operations around the globe. Jeppesen is a subsidiary of Boeing Commercial Aviation Services, a unit of Boeing Commercial Airplanes. Jeppesen corporate information is available online at www.jeppesen.com.

Contact Jeppesen Marine at 888-272-6217 or marineinfo@jeppesen.com for more information about Jeppesen Workboat Navigator - A Professional Information Service.