At an investment said by ASMAR to exceed US$210 million, the 111m-long newbuild will be a unit of the Chilean Navy, but will also serve the other bodies involved in the national Antarctic effort – namely the Instituto Antártico Chileno (Chilean Antarctic Institute), the Army and the Air Force. The vessel


is due to be ready for


the 2022 winter season. She will offer the capacity to extend the Antarctic campaigns, undertaking logistic support, search and rescue and scientific studies throughout the Southern Ocean and southward of the Antarctic Polar Circle. Vard Marine of Canada has been


entrusted with the basic vessel design, and is being supported by Aker Arctic as


regards


and model tests. Code-named Antartica 1, Chile’s


new ship will be of some 13,000tonnes displacement, with accommodation for a maximum complement of 155. Installed power of 14.5MW will allow passage through 1m-thick ice with a 200mm snow covering at some 2-3knots, and enable open-water transits at up to 15knots. The ship’s diesel-electric plant will be


based on four IMO Tier III-compliant diesel engines manufactured in the US by GE Marine, which was also nominated by the shipyard to supply the complete propulsion system, including the two 4.5MW propulsion motors. The ram-type steering gear, rudders and twin stern tube casting parts are being supplied by Damen Marine Components in the Netherlands. Te Finnish company Surma has been


selected by ASMAR as its contractor for the ship’s electromagnetic compatibility and electromagnetic interference (EMC/ EMI) design and management. In the current paradigm of wireless sensors and wireless information retrieval and communication systems, the calibre of onboard signal propagation has a key bearing on the maximisation of researchers’ time and icebreaker efficiency. Chile has stations and shelters in various


locations on the Antarctic Peninsula, in the South Shetland Islands and in the Patriot Hills-Union Glacier area.


hullform development


Australia’s new Antarctic supply and research ship Nuyina was constructed at Damen’s Galati yard in Romania


Additionally, scientific camps are set up in other locations according to scientific project requirements, and shipping transport is arranged accordingly. Chile says that the overarching objective of its research activities in the region is to produce internationally recognised, high-quality Chilean Antarctic research.


Research station supply Australia’s new Antarctic icebreaker Nuyina is expected to arrive in Hobart, the headquarters of the Australian Antarctic Division, in 2020. Te 160m vessel will become the main lifeline for Australia’s Antarctic and sub-Antarctic research stations and the central platform of the country’s Antarctic and Southern Ocean scientific research activities. Construction was implemented at


Damen Shipyards Galati in Romania two years ago, and completion is anticipated by the end of 2019. The concept design for the heavy icebreaker was drawn


up Australia has several research


stations in Antarctica and the Southern Ocean. During the summer season, the permanently manned bases are resupplied by aircraft and by regular voyages of P&O’s 1989-built, 95m Aurora Australis, which will be superseded by Nuyina. The new ship offers increased capabilities, capacity and endurance compared to her predecessor, and embodies a form and arrangement to enhance seakeeping and icebreaking performance. Icebreaking operations must be carried


by Copenhagen


consultancy Knud E Hansen and further developed by Damen Schelde Naval Shipbuilding in the Netherlands, which carried out the basic and detailed engineering. After delivery, Nuyina will be operated and maintained by Serco Defence, under contract to the Australian Antarctic Division.


Offshore Marine Technology 2nd Quarter 2019


out in sea ice of up to 1.65m thickness at a speed of 3knots. Ice ridges, where crushed ice is piled up and frozen after large ice sheets have collided, have to be negotiated by ramming, and vessel freeing in the most adverse circumstances has to be accomplished by what is known as star manoeuvring. Power, manoeuvrability and robustness must accordingly be of the highest order. Nuyina is distinguished by a diesel-


hybrid propulsion system, based on two drivetrains, whereby diesel direct drive is supplemented and augmented by power take-in (PTI) electric hybrid systems using the shaft generators energised by the auxiliary gensets. When most force is needed, during icebreaking and ramming, the plant is


9


Feature 2


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21