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Keywords: resistance
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Proceedings Papers

Paper presented at the SNAME 11th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 28–31, 2014
Paper Number: SNAME-ICETECH-2014-141
... We introduce a semi-empirical model that can determine a ship’s performance in level ice based on Lindqvist’s model and develop a simple model for calculating ice resistance. This model assumes that contact between the ship and the ice is a case of symmetrical collision, and two contact cases...
Proceedings Papers

Paper presented at the SNAME 11th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 28–31, 2014
Paper Number: SNAME-ICETECH-2014-130
... a series of ice model tests at the Aker Arctic ice laboratory to study the effects of CRP propulsors propeller flow with varying installation angles and steering angles on the ice management and ice-going capability of ice-breaking vessels. resistance icetech14-130-rf jukola page number hi 0 crp...
Proceedings Papers

Paper presented at the SNAME 11th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 28–31, 2014
Paper Number: SNAME-ICETECH-2014-168
... together to develop a test program, to carry out tests and to discuss test results as well as improvements. The model test program included resistance, propulsion and maneuvering (turning circle) tests both in ice and open water; ice ridge penetration tests; the wake survey, seakeeping and stationkeeping...
Proceedings Papers

Paper presented at the SNAME 10th International Conference and Exhibition on Performance of Ships and Structures in Ice, September 17–20, 2012
Paper Number: SNAME-ICETECH-2012-160
... resistance brash ice nozzle maneuver Results of Investigation of USCG 175-ft WLM Class Buoy Tender Performance in Ice David B. Karnes & James W. St. John Science & Technology Corporation, Polar Technology Group Columbia, MD, USA Karl A. Stambaugh United States Coast Guard Surface Fleet Logistics Center...
Proceedings Papers

Paper presented at the SNAME 10th International Conference and Exhibition on Performance of Ships and Structures in Ice, September 17–20, 2012
Paper Number: SNAME-ICETECH-2012-117
... shell was studied experimentally. The SCS specimens were designed using the ISO ice pressure. The experimental results show that they possess far higher resistance against patch load caused by ice. Moreover, the load-deflection behavior of the curved SCS sandwich system is ductile and it can absorb...
Proceedings Papers

Paper presented at the SNAME 9th International Conference and Exhibition on Performance of Ships and Structures in Ice, September 20–23, 2010
Paper Number: SNAME-ICETECH-2010-147
... tests will be carried out in order to improve their ice-going capability as well as their performance. This in turn leads to increased demand for physical model testing in ice to assist a design process and to improve a vessel’s ice-going capability and performance. The estimation of a ship’s resistance...
Proceedings Papers

Paper presented at the SNAME 8th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 20–23, 2008
Paper Number: SNAME-ICETECH-2008-125
... The first resistance and propulsion tests of a Terry Fox model were carried out in 1988 at the Institute for Ocean Technology, IOT (formerly Institute of Marine Dynamics, IMD). More recent resistance and propulsion model tests were again conducted in 2007. This paper describes not only...
Proceedings Papers

Paper presented at the SNAME 8th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 20–23, 2008
Paper Number: SNAME-ICETECH-2008-158
... exerted on an inclined retaining wall, ridge keel resistance during seabed scouring, dynamic response of a moored conical drill-ship in ice, and ship maneuvering performance in ice. Representative simulations for each case are presented including load, motion and/or interaction process, whichever...
Proceedings Papers

Paper presented at the SNAME 8th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 20–23, 2008
Paper Number: SNAME-ICETECH-2008-108
... describes the basis of hull form design and propulsion system including the performance evaluation results for ice breaking vessel. pod propulsion propulsion system extreme ice shi level ice condition ice condition ice resistance resistance twin pod propulsion tanker level ice propulsion...
Proceedings Papers

Paper presented at the SNAME 8th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 20–23, 2008
Paper Number: SNAME-ICETECH-2008-169
... velocities as a simulation of station keeping conditions for a new generation of Arctic drillrigs and production vessels. Existing scaling relationships were used to relate the resistance of the Svalbard to the expected resistance of a moored vessel of defined characteristics, and for different conditions...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-131
... analysis results of propeller blade are presented for strength assessment based on the ice loads and failure criteria in the proposed new FSICR. In addition, propeller cavitation and its induced surface force due to thicker blades used in ice class ships are also studied. engine power resistance...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-145
... of the ice island. These ice loads are resisted by a grounded ice island through sliding resistance along the seafloor and internal shear within the island. Methods of assessing ice loads imposed on ice islands are addressed, focusing on alternative mechanisms which may result in lower failure loads than...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-104
... the analysis of the resistance and propulsion tests, the Healy, with its total shaft horsepower of 30,000, was shown to be capable of its design requirement. Using a similar analysis, an imaginary “Polar 8” icebreaker of the Healy design was shown to require 85,000 HP to continuously break ice of 2.44 m (8 ft...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-153
... selected to simulate the tanker performance when operating independently in ice thicknesses from 1.4 m to 2.4 m. The ice thickness 2.4 m is close to the performance limit of the icebreakers. Three types of tests were run; resistance tests in channels with different widths, resistance test in compressive...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-116
... improvement in icebreaking performance compared to a conventional open-water bulbous bow but with almost no penalty to open water resistance. The paper presents predictions of speed and power for each icebreaking tanker design, in level ice, pack ice and open water. The important features of each hull form...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-144
... and we consider that the maximum tensile stress on upstream face of the dam is near to tensile resistance of concrete. Contour of maximum pressure stresses on downstream face of the dam has been shown in Figure 7. Fig. 7: Contour of maximum pressure stresses on downstream face of the dam when air...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-130
... the bow length and, when combined with a low stem angle and a low bow block coefficient, resulted in a large reduction in icebreaking resistance and an accompanying reduction in open-water resistance. The M/V Arctic was retrofitted with this type of bow and achieved a significant improvement...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-101
... and distances of transportation, desired vessel functional requirements and characteristics, as well as examples of operations and discussions about vessels. offshore pipeline north sea monohull subsea system grand bank seastate norwegian sea installation season upstream oil & gas resistance...
Proceedings Papers

Paper presented at the SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice, July 16–19, 2006
Paper Number: SNAME-ICETECH-2006-133
... by experimentally investigating the hull’s ice transiting resistance and its motions, and to validate a numerical model of lifeboat sail away. This paper reports on the physical model experiments and their comparison with numerical modeling. Performance of Survival Craft in Ice Environments Michael Lau Institute...

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