Marine Log - November 2007 - (Page 89) Technews Push button playback Washington State Ferries, Everett, Wash., has purchased the Last Call Marine system from S.H. Systems, Inc., Everett, Wash., for use in every wheelhouse of its operational fleet. The system, records 60 seconds of the last transmission received—then with the push of a button the message can be repeated. It can also be used to save a single message for emergency or legal reasons. The unit is easily plugged into the external speaker jack of a VHF radio, and runs on a 12 volt DC battery. www.lastcallmarine.com ing (SAW) power sources with customized waveforms to limit the amount of heat generated into the work piece during welding and to optimize weld metal deposition rates for enhanced heat affected zone (HAZ) properties and increased productivity, respectively. In a follow-on project, BMT foocused on imporving the efficiency of joining longitudinal stiffeners to large panels using twin-wired tandem SAW techniques. High speed fillet welding procedures were developed to deposit 4 to 10mm single pass fillets at travel speeds of up to 230 to 165 cm/min. These results demondstrated productivity of up to 500% compared to the conventional shipyard practice, without an increase in distortion. www.fleetech.com BMT Fleet Technology, reducing welding induced distortion BMT Fleet Technology, Ontario, Can., under the National Shipibuilding Research Program (NSRP), has been investingating and developing new welding techniques to optimize productivity and reduce welding induced distortion for the U.S. shipbuilding industry. The investigations began by examining advanced submerged arc weld- 89 MARINE LOG NOVEMBER 2007 www.marinelog.com http://www.fleetech.com http://www.lastcallmarine.com http://www.noxudolusa.com http://www.noxudolusa.com http://www.marinelog.com
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