The stern mounted A-frame has a safe working load of 14,500 lbs, a clearance height of 20' 9'', and a clearance width of 15' 7''. The A-frame is hydraulically powered and swings outboard to give a 6' 8" clearance over the stern. It is equipped with a modified general oceanic trawl block.  With this block attached, there is a clearance height of 16' 9''. The A-frame is primarily used in conjunction with the Dynacom Multi-purpose Oceanographic winch for mooring deployment and retrieval, net trawls, etc. The A-frame is equipped with lights, various cleats and pad eyes, and other smaller type blocks.