View non-flash version
April 2006 55 vered precisely using just a single crane. Furthermore, it is designed to keep the interplay of forces under tight control so that the risk of deflection and the conse- quent stresses can be reduced. To be able to position the superstruc- ture using the SyncHoist and one crane, a special hoisting frame was made. As Van Vuuren explained, "By using the lifting frame, we were able to keep all the parts that we had constructed intact." A total of eight lifting points were used. Four of these were provided on two heavy-duty beams on the underside of the superstructure, with lifting cables that ran through the superstructure. The other four cables were attached to the outside of the superstructure to keep it properly balanced. The double-acting hydraulic (lifting) cylinders of the SyncHoist system were integrated into the four outermost cables. These cylin- ders allow both lifting and lowering cor- rections in each cable to be controlled precisely. These four cylinders, each with a capacity of 85 tons, were placed in the right position before the lift, so that a pre-loading was achieved. While lifting and positioning the superstruc- ture, the interplay of forces in the cylin- ders, and the movements, are monitored by sensors and a computerized system, and corrected if necessary, to the pre- defined values. Circle 2 on Reader Service Card Circle 242 on Reader Service Card The New York City Department of Transportation's Staten Island Ferry Division seeks Chief Marine Engineers and Assistant Captains CHIEF MARINE ENGINEERS: Base Salary - $51,082 for a 32 hour week. Supervises engine crew. Directs the operation of the main propulsion equipment and auxiliaries of a diesel powered ferryboat. Supervises and directs the operation, maintenance and minor or emer- gency repair of the main propulsion equipment, boilers, auxiliaries, electrical equipment, steering engines, pumps and fuel tanks on New York City ferryboats. Performs all duties of inspection officer below decks. QUALIFICATIONS: A valid license for Chief Marine Engineer of Motor Vessels of any H.P. issued by the U.S. Coast Guard Inspection Service, or an equivalent license in motor vessels issued by the U.S. Coast Guard Inspection Service. This license must be Maintained for the duration of employment. Subject to medical and drug screening. Excellent benefits package. ASSISTANT CAPTAINS - Base Salary - $46,794 for a 32 hour week. Under direction acts as executive officer and pilot of a ferry boat, assists the Captain in the safe oper- ation of ferry vessel. QUALIFICATIONS: 1) A valid U.S. Coast Guard license as Pilot of Steam or Motor Vessels of unlimited tonnage with the following extension of routes: Upper Bay on New York Harbor; the East River from the Battery to Execution Rock; the North River from the Battery to the George Washington Bridge; Kill Van Kull to Mariner’s Harbor; and, with endorsement as Radar Observer; 2) and, a Federal Communications Commission Radio Operator permit (radio telephone operator’s certificate restricted) 3) Six months of satisfactory full-time experience piloting a large ferry or comparable vessel in New York Harbor and/or its contiguous waters. All hiring is initially as Deckhand or Mate. Upon successful completion of an agency administered training program, pro- motion available to Assistant Captain position. Subject to medical and drug screening. Excellent ben- efits package. Send resume and indicate position of interest to: Arthur Aaronson NYC Department of Transportation Staten Island Ferry 1 Bay Street, Staten Island, NY 10301 Fax 718-447-5338 e-mail aaaronson@dot.nyc.gov NO TELEPHONE INQUIRIES. Visit our website@www.nyc.gov/dot EQUAL OPPORTUNITY EMPLOYER STATEN ISLAND FERRY OPERATIONS CHIEF MARINE ENGINEERS & ASSISTANT CAPTAINS NEW YORK CITY DEPARTMENT OF TRANSPORTATION Circle 259 on Reader Service Card Circle 294 on Reader Service Card The bridge is positioned on the Tenix to a toler- ance of 1 mm. MR APRIL2006 #7 (49-56).qxd 4/3/2006 2:46 PM Page 55
