The Australian shipping industry has often evolved some unusual and innovative ships, though they don’t seem to get a lot of publicity internationally. Maybe that’s why it is difficult to find much information about them. One example:
During the mid-seventies, the Australian National Line acquired a series of RoRo Container ships of the Australian Emblem class, for use on the “Eastern Sea Road” between Japan and Australia. Reading between the lines, it seems likely that the ships brought Japanese cars and other manufactured products to the Australian market.
An unusual and interesting feature was the propulsion, with three medium-speed diesels geared to a single shaft, driving a CPP. At the time, this was regarded as the highest power CPP in the world, at 46,000HP. Apparently, medium speed diesels were chosen so that the machinery height allowed a low second deck extending to the stern, necessary for the rolling cargo access via the stern ramp.
But it also made a complex installation, with 46 cylinders, at least three clutches, intricate control system, and so on, and perhaps access was not so good.
I’m hoping to hear something about how this worked out in practice, from anyone who may have served on board those ships. Operation both while manoeuvring and "full away" under different conditions, as well as maintenance aspects, are all of interest. Thank you in advance.
During the mid-seventies, the Australian National Line acquired a series of RoRo Container ships of the Australian Emblem class, for use on the “Eastern Sea Road” between Japan and Australia. Reading between the lines, it seems likely that the ships brought Japanese cars and other manufactured products to the Australian market.
An unusual and interesting feature was the propulsion, with three medium-speed diesels geared to a single shaft, driving a CPP. At the time, this was regarded as the highest power CPP in the world, at 46,000HP. Apparently, medium speed diesels were chosen so that the machinery height allowed a low second deck extending to the stern, necessary for the rolling cargo access via the stern ramp.
But it also made a complex installation, with 46 cylinders, at least three clutches, intricate control system, and so on, and perhaps access was not so good.
I’m hoping to hear something about how this worked out in practice, from anyone who may have served on board those ships. Operation both while manoeuvring and "full away" under different conditions, as well as maintenance aspects, are all of interest. Thank you in advance.