Page 39: of Maritime Reporter Magazine (February 1968)

FAHM Control Suitable For Diesels In Parallel Simplified bridge console of the FAHM type gives the deck officer full control of the main propulsion plant. Recently two dry cargo ships were delivered which incorporated the latest designs in bridge control of the main engines. Both ships are propelled by two reversible Pielstick diesel en-gines driving the single propeller through couplings and reduction gearing. The bridge control system for each ship was manufactured by Svenska Ackumulator Aktiebolaget Jung-ner of Stockholm, Sweden. The system, called FAHM, is electrical. Dur-ing bridge control operation, the desired rpm ahead or astern is selected on the telegraph. The order is conveyed by a synchronous motor to another synchronous motor which controls the servomotor of the Woodward regulator and increases the speed according to a preset ac-celeration program. In case the regulator set-tings do not correspond with the selected rpm on the bridge telegraph, there is a feedback to the electronic control center that in turn sends signals to the servomotors on the regulators until the desired rpm is obtained. Since both engines in the plant must oper-ate at the same speed, there is a cross connec-tion in the servo-mechanism which synchron-izes the two engines. The electronic control center supervises the change in speed and the adjustment of speed without manual operations from the bridge. In order to simplify fast maneuvers in port it is possible to select a so-called harbor pro-gram. In this position one engine is kept idling ahead and the other idling astern. Through this mode of operation the propulsion machin-ery is kept in the highest alert for ahead as well as astern maneuvers. For normal sea op-eration a sea maneuver program is connected wherein both engines are operating in the ahead position. The first automatic bridge control system was developed by Svenska Ackumulator AB Jungner in 1964. Since then over 70 systems have been furnished or are on order..They have been installed on ships using Burmeister & Wain, Sulzer and M.A.N, engines of either slow or medium speed besides the Pielstick in-stallation described previously. The manufac-turer also states that this system is readily adaptable to steam turbines. Dravo Corporation Appoints Chidester And White Dravo Corporation, Pittsburgh, has an-nounced the appointments of Robert J. Chides-ter as manager, public relations, and Donald F. White as manager, product advertising. Mr. Chidester will be responsible for the firm's public relations, corporate advertising and promotion and internal communications. He has been employed at Dravo since 1963 and had served as supervisor, editorial services. Mr. White will be responsible for all prod-uct and service advertising of the company's divisions and subsidiaries. He previously was manager, corporate advertising, at Rockwell Standard Corporation. NASHVILLE BRIDGE COMPANY P.O. Box 239 Nashville, Tennessee Other profit-proven products include: ? Deck Hardware ? Hose Cranes ? 40-Ton Winch ? Bow Steering Units ? Flush Mounted-Watertight Hatches EAST COAST REPRESENTATIVE: Smith-Meeker Engineering Co., 157 Chambers St.. New York City Deck Fittings by Nabrico Nashville Bridge Company has pioneered in the water transport industry for fifty years. In that time, many of their innovations have become standard equipment on the rivers. For example, the Nabrico 40-ton winch, with 20 times faster take up than a ratchet, is available in a broad range of power options... manual, electric, hydraulic or air. It's made in true right and left hand arrangements. The Nabrico flush hatch cover has no projections to foul lines or trip deck hands. It secures watertight without tools and is approved by American Bureau of Shipping. In addition, Nabrico builds hose cranes, locking pins and sockets, bitts, chocks, kevels and bow steering units. Write for complete catalog and price list of Nabrico deck fittings and hardware. BAY HOUSTON TOWING CO, HARBOR AND COASTWISE TOWING HOUSTON ? GALVESTON ? CORPUS CHRISTI FREEPORT ? TEXAS CITY February 1, 1968 41