Page 42: of Marine Technology Magazine (January 2012)

42MTRJanuary/February 2012 products MacArtney has designed and built a new kind of A- frame that is designed to make accessing equipment onthe A-frame more convenient and safe. The new system makes it possible to access the top of the A-frame from the deck of the ship. This hydraulic design, using just two rams, articulates the A-frame a full 149 degrees from the 20 degree angle for launching equipment over the side or the rear of the vessel to 11 degrees over the deck of the ves- sel. It has a high total safe working load throughout the entire process. Equipment, for example a full ROV launch system, can be installed on the A-frame on deck by oper- ators working at deck level and readied for launch. With all operators clear of the frame, the A-frame can be liftedup, past 90 degrees and then onwards over the side or the rear of the vessel and lowered down to 20 degrees for launch into the water. For retrieval, the process is reversed and the A-frame raised past the 90 degree point and low- ered to 11 degrees over the vessel deck. From here, opera- tors can conveniently remove and replace equipment and make any necessary adjustments to the A-frame without having to be hoisted up the frame. Lowering the A-frame to 11° from the deck also makes any service and mainte- nance work easier and faster to perform. MacArtney?s Articulating A-frame is designed with a safe working load of 89 kN and safety factor (Psi) of 2.5. Luffing is at 48.5 kN with docking head and 89 kN without docking head.It has a luffing range of 11 degrees inboard to 20 degrees outboard. Email: info@ macartney.com www.macartney.com New Articulating A-frame by MacArtney Articulating Aframe by MacArtney. Chinese RV?s ?Go Green? with Underwater CTD Profilers Shallow Sea Technology Development Corp., The Oceanscience Group's representative in China, has taken delivery of six ?green? UnderwayCTD profiling systems destined for installation on Chinese Navy vessels, to be operated by the National Oceanic Technology Center (NOTC). Workers on these vessels wishing to gather temperature and salinity profiles while underway have tra- ditionally used expendable bathythermographs (XBT) or expend- able CTD (XCTD) probes. Email: sales@ oceanscience.com www.oceanscience.com MTR#1 (34-48):MTR Layouts 1/3/2012 10:57 AM Page 42