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tons of fuel oil, 550 tons of potable water, 12,000 cubic feet of cement/ bulk cargo, and 1,000 tons of deck cargo. The vessel has high cargo dis- charge rates, and the capability to deliver potable water, drill water, fuel oil, and two types of dry bulk cargo simultaneously. A Kongsberg portable joystick provides a high level of control during maneuver- ing. The latest electronic navigation and communications equipment is installed, including two indepen- dent gyrocompasses, autopilot, Sim- rad ADF and navigation sounder, JRC speed log and two radars, an emergency located/transmitter, crewcall/talkback system, two Sai- lor VHF radiotelephones, two CMC portable VHF radios, Skanti watch receiver, and Sailor tandem main radio station with full back-up. safety, allowing the vessel to handle empty barges with ease. A new Iowa Marine design allows the 30-ton Patterson electric winches to be installed inside the tow-knees. This protects the win- ches from weather and provides a large, clear forward deck area. The raised stern deck is covered with rough-cut 2- by 8-foot oak planking, giving it a non-skid surface for safe access to rudders and steering mechanisms. Heat is provided by 30,000-Btu truck type heaters fed by the main engines and equipped with 12-volt fans. This heating system is backed up by 220-volt electric heaters. Two Carlisle & Finch incandescent searchlights are installed, one 120- volt and one 12-volt. The vessel has two all-channel Raytheon 53 VHF radios, a Raytheon 400 loudhailer/ intercom, and complete engine alarm system. All navigation lights, pilothouse lights, and some deck and engine room lights are 12-volt operated. The Iowa Marine-designed, full- follow-up steering system is driven by main-engine-powered hydraulic pumps, giving the vessel the ability to operate without the generator in case of emergency or for added economy. The bilge pump is designed so that any compartment of the vessel can be either pumped or ballasted (continued on page 22) KMMMlSSa BETTY EDWARDS Iowa Marine Iowa Marine Shipyard in Keokuk, Iowa, recently delivered the river towboat Betty Edwards to Morris Harbor Service of Morris, 111. Both companies are wholly owned subsid- iaries of Iowa Marine, which is also headquartered in Morris. The new vessel is named after the mother of Tom Edwards, Iowa Marine's board chairman. She has a length of 50 feet, beam of 22 feet, and depth of 7 feet; the pilothouse has an eye level of 25 feet. Twin Cummins NTA-855 main diesel engines develop a total of 650 bhp at 1,800 rpm. Two Twin Disc 5.17:1 reduction gears turn 54-inch Kahlenberg propellers through 5- inch shafts. Electrical power is pro- vided by a 25-kw Lima generator driven by a 3-cylinder Duetz air- cooled diesel. Other equipment in- cludes a Dayton air compressor, Humphrey sanitary system, hot water heater, air conditioners, elec- tric range, and refrigerator. The vessel has many innovative design features that add to her ver- satility and ease of maintenance. The pilothouse measures 8 by 8 feet and has deep windows that provide complete visibility to all four cor- ners of the boat from the operator's seated position. The second deck is equipped with a full fleet deck, spe- cially designed for strength and Circle 202 on Reader Sen/ice Card January 1, 1985 23 21 ^phertson APS AUTOPILOT ALARM RESET AP9. More accurate, more precise than any pilot ever. Robertson s AP9 microprocessor autopilot reaches new per- formance heights for the de- manding commercial customer, with a predictive software program that actu- ally computes vessel rudder-response char- acteristics, instead of relying on the conven- tional dead band principle. This, combined with a totally new rudder feedback system, eliminates rudder overshoot—resulting in exceptionally accu- rate steering because the rudder is always precisely positioned. Just about any medium or large vessel can benefit from the AP9. Course, system status and user-selected operating mode are clearly shown on two crisp LCD's. The AP9 has such stan- dard features as built-in interfaces for magnetic compass, any brand gyrocompass, and any NMEA-compatible Loran C/satnav receiver. Backlighted pushbuttons control all operating func- tions. However, the familiar rotary knob is retained for easy course selection. Other conveniences include a complete range of options to tailor the AP9 to the specific requirements of any class of commercial vessel or large yacht. Robertson's AP9. , . Finally, the perfect pilot. 1 ^ODCltSOIl See us at the Work Boat Show Booth 550 Kongsberg North America, Inc. 400 Oser Avenue, Hauppauge, NY 11788 Tel. 516-273-3737/800-64S-3738 Telex 221686 RCA or ar>/-l A/Tr>T^ol 1 ar T .aire* nrntprtinn nn7.7.1p:s. uuii oi Mexico, ine rie. wnicn is
