Tor Berg - Academia.edu (original) (raw)

Papers by Tor Berg

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2023

Since January 2021, Havila Kystruten has been one of two companies sailing the coastal route betw... more Since January 2021, Havila Kystruten has been one of two companies sailing the coastal route between Bergen and Kirkenes. This paper contains information on the new shipping company Havila Kystruten and their 2019 bid for a 10-year operational license to sail the coastal route. The governmentʹs tender documents for the new license specified that the vessels operating the route had to be low-emission vessels. This requirement was in line with the governmentʹs white paper on the reduction of emissions for commercial and fishing vessels sailing in Norwegian waters. Thus, companies bidding for the new license had to offer new ships with low emission characteristics or rebuild existing vessels to obtain the low emission requirements. Based on the offers, the government decided to split the operational license between two companies. One part was given to the company previously operating the route (Hurtigruten) and the other to the new company Havila Kystruten. While Hurtigruten would rebuild the engine systems on some of their existing vessels, Havila Kystruten would operate the route using new vessels with low emission signature. The design requirements for these vessels were given by Havila Kystruten to the ship designer, Havyard Design and Solutions (now HAVDesign). Some of the requirements are listed in section 4 below. The latter part of this paper investigates the manoeuvring performance of the new Havila Kystruten vessels, containing a summary of a Research Council of Norway funded innovation project on harsh weather ship handling during port operations. The Port of Trondheim was selected as a case study.

Increased shipping and offshore activities in the Barents Sea need improved emergency response ca... more Increased shipping and offshore activities in the Barents Sea need improved emergency response capability in Norway and Russia. In both countries there are several projects and initiatives that aim towards mitigating the consequences from small accidents and larger catastrophes, some coordinated across borders, others not. In this paper we aim towards giving an overview of the current and near future state of emergency response in the Barents Sea. First we describe the emergency response preparedness that is fully operational today. Then we give a brief description of operations and activities we see today and in the foreseen future, and discuss types of challenges and risks associated with them in this particular environment. Using this as a background, we look on Norway’s ambitions for future search and rescue preparedness in the Norwegian Arctic waters and the ways emerging technologies can improve emergency response operations. Finally we give some recommendations on what needs to be done by Norway, Russia and the industrial operators in order to achieve an improved level of emergency response preparedness.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2023

Aquaculture is an industry that has developed rapidly over the past decades. Despite several haza... more Aquaculture is an industry that has developed rapidly over the past decades. Despite several hazards in the operations, emergency preparedness is not at the same level as in the rest of the maritime industry. This paper highlights some possibilities to increase the aquaculture industry's coastal emergency preparedness. This paper is the result of the innovation project "Coastal Emergency Preparedness" funded by the Norwegian Research Council and industry partners. The aquaculture industry must establish its own emergency preparedness. In this paper, the innovation of a fleet of emergency preparedness vessels along the coastline, which could fill the gaps in emergency preparedness, is presented. The vessels would be of varied sizes, with different equipment and response times, and could assist the aquaculture industry during local incidents or large-scale ones, such as algae blooms or winter storms, that affect many sites at the same time. Each production zone would need its own dedicated fleet due to biosecurity regulations. The emergency preparedness vessel fleet would be led by an on-scene commander. The fleet would deal with oil spills and tasks such as emergency towing, firefighting, rescue of people, recapturing of fish, silage making, algae detection, and diving missions. With such a vessel fleet, small and large aquaculture companies could increase their emergency preparedness with a common strategy and shared resources.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2021

The Twenty-second International Offshore and Polar Engineering Conference, 2012

Many maritime emergency situations involve drifting vessels, and tools to predict drifting patter... more Many maritime emergency situations involve drifting vessels, and tools to predict drifting patterns have been developed by meteorology institutes, class societies and research companies. It is important to be able to predict a vessel’s drifting path and to estimate when it will drift into waters where grounding is a possible outcome. Such a prediction tool would provide valuable input to the planning of an emergency towing operation to prevent the vessel from grounding or to reduce the impact of the grounding.In this paper we present the outcomes of a study that investigated the drifting pattern of a vessel with an engine shut-down in the Barents Sea. As part of the ongoing A-Lex project [1], MARINTEK has prepared a VeSim [2] model to investigate the drifting path of a cargo vessel. The outcomes of the study will be used to draw up a technical specification for work to be done to develop an improved ship drift model in Norwegian Meteorological Institute’s (MET Norway’s, [3]) new Halo platform [4]. An improved model will be of great help to those planning emergency towing operations and for positioning of emergency preparedness units with respect to the traffic situation (especially tracks of vessels carrying dangerous goods) and weather forecasts.© 2015 ASME

All Days, Mar 23, 2015

Towing operations present a number of challenges related to acceptable weather window, number of ... more Towing operations present a number of challenges related to acceptable weather window, number of and power rating of tugs, towing gear design and capabilities, positioning of tugs and experience of towing master and tug crews. The past five years have seen several major accidents related to towing operations in Arctic waters. This paper will review three cases. The first concerns the total loss of the "Kolskaya" rig during transit in the Sea of Okhotsk in 2011. It resulted in the loss of life of a significant number of sailors/rig workers. During the towing of the drilling rig "Kulluk" from Alaska in late 2012, the towline broke and the rig drifted and went aground. US Coast Guard resources saved all the crew members; the hull was penetrated and partly filled with water. In the subsequent salvage operation, the hull was temporarily sealed before the rig was refloated. After the rig was inspected and found seaworthy, she was towed to shelter. Here a further assessment of the damage took place. Later she was towed to Captain's Bay (Unalaska) and loaded on a heavy lift ship for repair at an Asian shipyard. It was later decided to scrap the rig. A third example was the tow of the Norwegian fishing vessel "Kamaro" in October 2012. The vessel lost engine power south of Bear Island. During the second day of the tow the weather deteriorated and the master of the assisting Coast Guard vessel feared that the towline would break. It was decided to evacuate the crew of the fishing vessel and an emergency response helicopter was mobilised. During the first attempt to lift off crew members from the aft deck of the fishing vessel, the lifting wire got entangled and broke sending the crew members into the sea. With one of the rescue winches out of order it was decided that crew members in survival suits should to jump overboard and swim away from the vessel until they were picked up by the SAR helicopter. The paper provides a brief review of these cases and focuses on lessons to be learned for future emergency towing operations in Arctic waters.

The Norwegian state oil company Statoil is the major offshore loading operator in the North Sea. ... more The Norwegian state oil company Statoil is the major offshore loading operator in the North Sea. They operate/have signed chartering contracts for 15 offshore loading oil tankers, varying between 80,000-130,000 dead weight tons (dwt). These tankers have presently performed more than 3300 loading operations from single point mooring systems ranging from articulated column buoys to subsea buoys. This type of operation gives the crew frequent practical training in ship handling and the operation of the dynamic positioning system (DP-system). Due to Statoil's concern for the environmental consequences of accidents, they have worked out and put into operation a safety quality system where crew performance has been given high priority. As part of this safety quality system, Statoil has designed a compulsory simulator training programme for all navigators on offshore loading tankers. The Ship Manoeuvring Simulator (SMS) in Trondheim, Norway, was chosen by Statoil as their training site. To fulfil the requirements set by the oil company, a number of modifications and extensions had to be made to the simulator hardware. This paper highlights the work that has been done to develop the complete offshore loading simulator training system.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2021

The Norwegian Emergency Towing Services (NETS) is managed by the Norwegian Coastal Administration... more The Norwegian Emergency Towing Services (NETS) is managed by the Norwegian Coastal Administration (NCA). In the early days of the NETS, the operational part was sheared between commercial tug companies and the Norwegian Coast Guard (NCG). A major change in the organization of the operation took place from January 1st 2020, when NCG was given the operational responsibility for NETS. This change is briefly described and the vessels in today's NETS are presented. Statistics for drifting vessels in Norwegian waters are presented before some selected recent maritime emergency incidents are highlighted. Actions by the NETS vessels and other NCG vessels will be highlighted. Handling of "FV Nortguider" after the grounding in Hinlopen (Svalbard) and the wreck removal work is one of the cases. The other two are drifting ship represented by the cruise vessel "Viking Sky" and the cargo vessel "Eemslift Hendrika". The final part of this paper discusses ways to ensure knowledge and operational experience sharing for personnel on vessels performing emergency towing tasks.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2020

The Norwegian Coastal Administration (NCA) is an agency of the Norwegian Ministry of Transport an... more The Norwegian Coastal Administration (NCA) is an agency of the Norwegian Ministry of Transport and Communications, and is responsible for services related to maritime safety, maritime infrastructure, transport planning and efficiency, and emergency response to acute pollution and drifting vessels. NCA has five regional Vessel Traffic Service centres. Of those, Vardø VTS has the special task of monitoring high-risk maritime traffic in Norwegian territorial waters, including the sea areas around Svalbard. Based on the history of ship incidents in Norwegian waters and lack of commercial tug resources in Northern Norway and the Svalbard area, the government decided in 2005 to establish a national emergency towing service. The establishment and coordination of this service was assigned to the Norwegian Coastal Administration. This paper briefly describes the development of the Norwegian Emergency Towing Service (NETS), how the service has changed over the years and plans for the coming years. Some cases involving emergency towing vessels are described. The paper also reviews the development of a national competence plan for senior officers on vessels employed by the Norwegian Emergency Towing Service.

A research vessel (RV) plays an important role in many fields such as oceanography, fisheries and... more A research vessel (RV) plays an important role in many fields such as oceanography, fisheries and polar research, hydrographic surveys, and oil exploration. It also has a unique function in maritime research and developments. Full-scale sea trials that require vessels, are usually extremely expensive; however, research vessels are more available than other types of ship. This paper presents the results of a time-domain simulation model of R/V Gunnerus, the research vessel of the Norwegian University of Science and Technology (NTNU), using MARINTEK’s vessel simulator (VeSim). VeSim is a time-domain simulator which solves dynamic equations of vessel motions and takes care of seakeeping and manoeuvring problems simultaneously. In addition to a set of captive and PMM tests on a scale model of Gunnerus, full-scale sea trials are carried out in both calm and harsh weather and the proposed simulation model is validated against sea trial data.

A complete training and retraining programme in ship handling for deck officers on offshore loadi... more A complete training and retraining programme in ship handling for deck officers on offshore loading tankers has been developed over the past five years. Input from experienced masters, simulator and hydrodynamic specialists enabled new simulation hardware and software to be developed.

... Files: MRIS. Pagination: p. 3-11. Authors: Berg, TE. Martinussen, K. Utnes, T. Publication Da... more ... Files: MRIS. Pagination: p. 3-11. Authors: Berg, TE. Martinussen, K. Utnes, T. Publication Date: 1980. Serial: Norwegian Maritime Research Volume: 8 Issue Number: 4 Publisher: Royal Norwegian Council for Scientific & Indus Res. Corporate Authors: Selvigs Publishing A/S. ...

This memo contains information and preliminary results. MARINTEK accepts no responsibility of thi... more This memo contains information and preliminary results. MARINTEK accepts no responsibility of this memo and no part of it may be copied.

Modeling Identification and Control, 2014

In this paper a numerical model and experimental data are used to investigate the level ice perfo... more In this paper a numerical model and experimental data are used to investigate the level ice performance of a double-acting intervention vessel. The icebreaking capability and maneuverability in level ice are analyzed by evaluating the behavior of the vessel when it is running both ahead and astern. The paper also presents the implementation of a random crack size model for more realistic icebreaking behavior, giving more consistent evaluation of the vessel's performance in various ice conditions. The numerical simulations are firstly conducted in model-scale for a direct comparison with the experimental results. The scaling of ship speed and ice resistance is then discussed by comparing the simulation results in both full-scale and model-scale. The effect on the vessel's performance of the different properties of scaled model ice and full-scale sea ice is also assessed.

CRC Press eBooks, Jun 2, 2009

This paper presents development of and experience from a simulator based training course for pers... more This paper presents development of and experience from a simulator based training course for personnel in Norwegian emergency response operations. As a response to governmental white papers on emergency preparedness and safety at sea in Norwegian waters, it was decided to develop a simulator based training course with focus on emergency towing operations. The first part of the paper describes work done by a group of subject matter experts appointed by the Norwegian Coastal Administration. This group assisted the Ship Manoeuvring Simulator Centre to specify the content of a three days training course for deck officers on emergency response vessels. Two test courses were run in the summer of 2006. Feedback from these courses was used to update and extend course content for the first ordinary courses that took place later that year. The second part of the paper reviews course experience and feedback from course participants. The final part of the paper describes the links between the simulator based course and the research and development activities in the R&D project "Arctic Emergency Operation" involving partners from France, Germany, Japan, Norway and the United Kingdom.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2007

... 2. Existing and planned oil terminals in Murmansk and the Kola Bay, Bambulyak & Frantzen,... more ... 2. Existing and planned oil terminals in Murmansk and the Kola Bay, Bambulyak & Frantzen, 2005a ... as a national salmon fjord, lacking knowledge of the salmon and its vulnerability for oil pollution and uncertainty about how the operations would influence the sea bird population ...

Recent Norwegian studies have shown that there is a need for faster and more reliable rescue syst... more Recent Norwegian studies have shown that there is a need for faster and more reliable rescue systems for emergency operations related to offshore oil operation. Marintek has performed a feasibility study of a new concept for lifeboats, liferafts and people floating in the sea. The system consists of a floating dock operated by a crane with telescopic arms. It will be mounted on board a standard rescue vessel. Model tests have been performed in Marinetek's Ocean Basin for various sea and wind conditions, with a remotely controlled crane mounted on a remotely controlled model of a stand-by vessel. The objects to be picked up by the dock include a selfpropelled lifeboat as well as a drifting lifeboat and a life-raft. The tests have shown that the system can be operated in a seastate with a wave height of 5.50m. In addition to using the rescue dock in offshore operations, it has been proposed that this concept could be integrated in the rescue systems which are studied for pick-up of the European space-plane (Hermes)'s crew.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2023

Since January 2021, Havila Kystruten has been one of two companies sailing the coastal route betw... more Since January 2021, Havila Kystruten has been one of two companies sailing the coastal route between Bergen and Kirkenes. This paper contains information on the new shipping company Havila Kystruten and their 2019 bid for a 10-year operational license to sail the coastal route. The governmentʹs tender documents for the new license specified that the vessels operating the route had to be low-emission vessels. This requirement was in line with the governmentʹs white paper on the reduction of emissions for commercial and fishing vessels sailing in Norwegian waters. Thus, companies bidding for the new license had to offer new ships with low emission characteristics or rebuild existing vessels to obtain the low emission requirements. Based on the offers, the government decided to split the operational license between two companies. One part was given to the company previously operating the route (Hurtigruten) and the other to the new company Havila Kystruten. While Hurtigruten would rebuild the engine systems on some of their existing vessels, Havila Kystruten would operate the route using new vessels with low emission signature. The design requirements for these vessels were given by Havila Kystruten to the ship designer, Havyard Design and Solutions (now HAVDesign). Some of the requirements are listed in section 4 below. The latter part of this paper investigates the manoeuvring performance of the new Havila Kystruten vessels, containing a summary of a Research Council of Norway funded innovation project on harsh weather ship handling during port operations. The Port of Trondheim was selected as a case study.

Increased shipping and offshore activities in the Barents Sea need improved emergency response ca... more Increased shipping and offshore activities in the Barents Sea need improved emergency response capability in Norway and Russia. In both countries there are several projects and initiatives that aim towards mitigating the consequences from small accidents and larger catastrophes, some coordinated across borders, others not. In this paper we aim towards giving an overview of the current and near future state of emergency response in the Barents Sea. First we describe the emergency response preparedness that is fully operational today. Then we give a brief description of operations and activities we see today and in the foreseen future, and discuss types of challenges and risks associated with them in this particular environment. Using this as a background, we look on Norway’s ambitions for future search and rescue preparedness in the Norwegian Arctic waters and the ways emerging technologies can improve emergency response operations. Finally we give some recommendations on what needs to be done by Norway, Russia and the industrial operators in order to achieve an improved level of emergency response preparedness.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2023

Aquaculture is an industry that has developed rapidly over the past decades. Despite several haza... more Aquaculture is an industry that has developed rapidly over the past decades. Despite several hazards in the operations, emergency preparedness is not at the same level as in the rest of the maritime industry. This paper highlights some possibilities to increase the aquaculture industry's coastal emergency preparedness. This paper is the result of the innovation project "Coastal Emergency Preparedness" funded by the Norwegian Research Council and industry partners. The aquaculture industry must establish its own emergency preparedness. In this paper, the innovation of a fleet of emergency preparedness vessels along the coastline, which could fill the gaps in emergency preparedness, is presented. The vessels would be of varied sizes, with different equipment and response times, and could assist the aquaculture industry during local incidents or large-scale ones, such as algae blooms or winter storms, that affect many sites at the same time. Each production zone would need its own dedicated fleet due to biosecurity regulations. The emergency preparedness vessel fleet would be led by an on-scene commander. The fleet would deal with oil spills and tasks such as emergency towing, firefighting, rescue of people, recapturing of fish, silage making, algae detection, and diving missions. With such a vessel fleet, small and large aquaculture companies could increase their emergency preparedness with a common strategy and shared resources.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2021

The Twenty-second International Offshore and Polar Engineering Conference, 2012

Many maritime emergency situations involve drifting vessels, and tools to predict drifting patter... more Many maritime emergency situations involve drifting vessels, and tools to predict drifting patterns have been developed by meteorology institutes, class societies and research companies. It is important to be able to predict a vessel’s drifting path and to estimate when it will drift into waters where grounding is a possible outcome. Such a prediction tool would provide valuable input to the planning of an emergency towing operation to prevent the vessel from grounding or to reduce the impact of the grounding.In this paper we present the outcomes of a study that investigated the drifting pattern of a vessel with an engine shut-down in the Barents Sea. As part of the ongoing A-Lex project [1], MARINTEK has prepared a VeSim [2] model to investigate the drifting path of a cargo vessel. The outcomes of the study will be used to draw up a technical specification for work to be done to develop an improved ship drift model in Norwegian Meteorological Institute’s (MET Norway’s, [3]) new Halo platform [4]. An improved model will be of great help to those planning emergency towing operations and for positioning of emergency preparedness units with respect to the traffic situation (especially tracks of vessels carrying dangerous goods) and weather forecasts.© 2015 ASME

All Days, Mar 23, 2015

Towing operations present a number of challenges related to acceptable weather window, number of ... more Towing operations present a number of challenges related to acceptable weather window, number of and power rating of tugs, towing gear design and capabilities, positioning of tugs and experience of towing master and tug crews. The past five years have seen several major accidents related to towing operations in Arctic waters. This paper will review three cases. The first concerns the total loss of the "Kolskaya" rig during transit in the Sea of Okhotsk in 2011. It resulted in the loss of life of a significant number of sailors/rig workers. During the towing of the drilling rig "Kulluk" from Alaska in late 2012, the towline broke and the rig drifted and went aground. US Coast Guard resources saved all the crew members; the hull was penetrated and partly filled with water. In the subsequent salvage operation, the hull was temporarily sealed before the rig was refloated. After the rig was inspected and found seaworthy, she was towed to shelter. Here a further assessment of the damage took place. Later she was towed to Captain's Bay (Unalaska) and loaded on a heavy lift ship for repair at an Asian shipyard. It was later decided to scrap the rig. A third example was the tow of the Norwegian fishing vessel "Kamaro" in October 2012. The vessel lost engine power south of Bear Island. During the second day of the tow the weather deteriorated and the master of the assisting Coast Guard vessel feared that the towline would break. It was decided to evacuate the crew of the fishing vessel and an emergency response helicopter was mobilised. During the first attempt to lift off crew members from the aft deck of the fishing vessel, the lifting wire got entangled and broke sending the crew members into the sea. With one of the rescue winches out of order it was decided that crew members in survival suits should to jump overboard and swim away from the vessel until they were picked up by the SAR helicopter. The paper provides a brief review of these cases and focuses on lessons to be learned for future emergency towing operations in Arctic waters.

The Norwegian state oil company Statoil is the major offshore loading operator in the North Sea. ... more The Norwegian state oil company Statoil is the major offshore loading operator in the North Sea. They operate/have signed chartering contracts for 15 offshore loading oil tankers, varying between 80,000-130,000 dead weight tons (dwt). These tankers have presently performed more than 3300 loading operations from single point mooring systems ranging from articulated column buoys to subsea buoys. This type of operation gives the crew frequent practical training in ship handling and the operation of the dynamic positioning system (DP-system). Due to Statoil's concern for the environmental consequences of accidents, they have worked out and put into operation a safety quality system where crew performance has been given high priority. As part of this safety quality system, Statoil has designed a compulsory simulator training programme for all navigators on offshore loading tankers. The Ship Manoeuvring Simulator (SMS) in Trondheim, Norway, was chosen by Statoil as their training site. To fulfil the requirements set by the oil company, a number of modifications and extensions had to be made to the simulator hardware. This paper highlights the work that has been done to develop the complete offshore loading simulator training system.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2021

The Norwegian Emergency Towing Services (NETS) is managed by the Norwegian Coastal Administration... more The Norwegian Emergency Towing Services (NETS) is managed by the Norwegian Coastal Administration (NCA). In the early days of the NETS, the operational part was sheared between commercial tug companies and the Norwegian Coast Guard (NCG). A major change in the organization of the operation took place from January 1st 2020, when NCG was given the operational responsibility for NETS. This change is briefly described and the vessels in today's NETS are presented. Statistics for drifting vessels in Norwegian waters are presented before some selected recent maritime emergency incidents are highlighted. Actions by the NETS vessels and other NCG vessels will be highlighted. Handling of "FV Nortguider" after the grounding in Hinlopen (Svalbard) and the wreck removal work is one of the cases. The other two are drifting ship represented by the cruise vessel "Viking Sky" and the cargo vessel "Eemslift Hendrika". The final part of this paper discusses ways to ensure knowledge and operational experience sharing for personnel on vessels performing emergency towing tasks.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2020

The Norwegian Coastal Administration (NCA) is an agency of the Norwegian Ministry of Transport an... more The Norwegian Coastal Administration (NCA) is an agency of the Norwegian Ministry of Transport and Communications, and is responsible for services related to maritime safety, maritime infrastructure, transport planning and efficiency, and emergency response to acute pollution and drifting vessels. NCA has five regional Vessel Traffic Service centres. Of those, Vardø VTS has the special task of monitoring high-risk maritime traffic in Norwegian territorial waters, including the sea areas around Svalbard. Based on the history of ship incidents in Norwegian waters and lack of commercial tug resources in Northern Norway and the Svalbard area, the government decided in 2005 to establish a national emergency towing service. The establishment and coordination of this service was assigned to the Norwegian Coastal Administration. This paper briefly describes the development of the Norwegian Emergency Towing Service (NETS), how the service has changed over the years and plans for the coming years. Some cases involving emergency towing vessels are described. The paper also reviews the development of a national competence plan for senior officers on vessels employed by the Norwegian Emergency Towing Service.

A research vessel (RV) plays an important role in many fields such as oceanography, fisheries and... more A research vessel (RV) plays an important role in many fields such as oceanography, fisheries and polar research, hydrographic surveys, and oil exploration. It also has a unique function in maritime research and developments. Full-scale sea trials that require vessels, are usually extremely expensive; however, research vessels are more available than other types of ship. This paper presents the results of a time-domain simulation model of R/V Gunnerus, the research vessel of the Norwegian University of Science and Technology (NTNU), using MARINTEK’s vessel simulator (VeSim). VeSim is a time-domain simulator which solves dynamic equations of vessel motions and takes care of seakeeping and manoeuvring problems simultaneously. In addition to a set of captive and PMM tests on a scale model of Gunnerus, full-scale sea trials are carried out in both calm and harsh weather and the proposed simulation model is validated against sea trial data.

A complete training and retraining programme in ship handling for deck officers on offshore loadi... more A complete training and retraining programme in ship handling for deck officers on offshore loading tankers has been developed over the past five years. Input from experienced masters, simulator and hydrodynamic specialists enabled new simulation hardware and software to be developed.

... Files: MRIS. Pagination: p. 3-11. Authors: Berg, TE. Martinussen, K. Utnes, T. Publication Da... more ... Files: MRIS. Pagination: p. 3-11. Authors: Berg, TE. Martinussen, K. Utnes, T. Publication Date: 1980. Serial: Norwegian Maritime Research Volume: 8 Issue Number: 4 Publisher: Royal Norwegian Council for Scientific & Indus Res. Corporate Authors: Selvigs Publishing A/S. ...

This memo contains information and preliminary results. MARINTEK accepts no responsibility of thi... more This memo contains information and preliminary results. MARINTEK accepts no responsibility of this memo and no part of it may be copied.

Modeling Identification and Control, 2014

In this paper a numerical model and experimental data are used to investigate the level ice perfo... more In this paper a numerical model and experimental data are used to investigate the level ice performance of a double-acting intervention vessel. The icebreaking capability and maneuverability in level ice are analyzed by evaluating the behavior of the vessel when it is running both ahead and astern. The paper also presents the implementation of a random crack size model for more realistic icebreaking behavior, giving more consistent evaluation of the vessel's performance in various ice conditions. The numerical simulations are firstly conducted in model-scale for a direct comparison with the experimental results. The scaling of ship speed and ice resistance is then discussed by comparing the simulation results in both full-scale and model-scale. The effect on the vessel's performance of the different properties of scaled model ice and full-scale sea ice is also assessed.

CRC Press eBooks, Jun 2, 2009

This paper presents development of and experience from a simulator based training course for pers... more This paper presents development of and experience from a simulator based training course for personnel in Norwegian emergency response operations. As a response to governmental white papers on emergency preparedness and safety at sea in Norwegian waters, it was decided to develop a simulator based training course with focus on emergency towing operations. The first part of the paper describes work done by a group of subject matter experts appointed by the Norwegian Coastal Administration. This group assisted the Ship Manoeuvring Simulator Centre to specify the content of a three days training course for deck officers on emergency response vessels. Two test courses were run in the summer of 2006. Feedback from these courses was used to update and extend course content for the first ordinary courses that took place later that year. The second part of the paper reviews course experience and feedback from course participants. The final part of the paper describes the links between the simulator based course and the research and development activities in the R&D project "Arctic Emergency Operation" involving partners from France, Germany, Japan, Norway and the United Kingdom.

TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, 2007

... 2. Existing and planned oil terminals in Murmansk and the Kola Bay, Bambulyak & Frantzen,... more ... 2. Existing and planned oil terminals in Murmansk and the Kola Bay, Bambulyak & Frantzen, 2005a ... as a national salmon fjord, lacking knowledge of the salmon and its vulnerability for oil pollution and uncertainty about how the operations would influence the sea bird population ...

Recent Norwegian studies have shown that there is a need for faster and more reliable rescue syst... more Recent Norwegian studies have shown that there is a need for faster and more reliable rescue systems for emergency operations related to offshore oil operation. Marintek has performed a feasibility study of a new concept for lifeboats, liferafts and people floating in the sea. The system consists of a floating dock operated by a crane with telescopic arms. It will be mounted on board a standard rescue vessel. Model tests have been performed in Marinetek's Ocean Basin for various sea and wind conditions, with a remotely controlled crane mounted on a remotely controlled model of a stand-by vessel. The objects to be picked up by the dock include a selfpropelled lifeboat as well as a drifting lifeboat and a life-raft. The tests have shown that the system can be operated in a seastate with a wave height of 5.50m. In addition to using the rescue dock in offshore operations, it has been proposed that this concept could be integrated in the rescue systems which are studied for pick-up of the European space-plane (Hermes)'s crew.