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Mv Ikaluk Level Ice Performance Trials
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Book Synopsis M.V. Ikaluk Level Ice Performance Trials by : Gulf Canada Resources Inc
Download or read book M.V. Ikaluk Level Ice Performance Trials written by Gulf Canada Resources Inc and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The major objective of the level ice performance trials was to assess the vessels' performance capabilities in level ice: first to demonstrate to the Canadian Coast Guard the Arctic class IV capabilities of the M.V. Ikaluk and M.V. Miscaroot and to obtain full Arctic class IV certificates; second, to provide BeauDril with a better knowledge of the vessels' capabilities in level ice. The trials program took place in early January 1984, and the Canadian Coast Guard certified the ships as full Arctic class IV on January 13, 1984. Subsequent analysis of the trials results has led to the following conclusions: The vessels are capable of moving continuously through 1.3 metres (4.25 ft.) of level ice, and are likely to be capable of moving continuously through 1.4 to 1.5 metres (approx. 4.5 to 5 ft.) of level ice; There is no significant reduction in ice resistance when operating either the bubbler system or the bow thruster (operating at low speed with both butterfly valves open, port and starboard) in level ice up to one metre thickness. Further, operating either bubbler system or the bow thruster consumes approximately 450 kw of power that would otherwise be available for propulsion, therefore reducing ships transitting speed. Transitting in a newly formed broken channel is up to 40% more efficient than transitting level ice. (i.e., either 40% higher speed for same power level, or 40% reduction in power for same transit speed). However, when channel begins to refreeze, the increase in efficiency reduces, dependent upon outside temperature and how long the channel has had to refreeze. After two to three weeks at temperatures around -20° C, transitting the refrozen broken channel becomes less efficient than transitting the level ice. During turning circle manoeuvres, at full power, the vessel was unable to turn more than 10° - 15° from original heading, in ice thicker than 0.5 metres. This is due to the near vertical side of the stern quarter, at the waterline, butting up against the unbroken level ice edge, preventing any lateral movement of the stern. When ramming an ice feature at full power from a broken channel, it is inefficient to back further than three shiplengths (240 m) to obtain maximum impact speed (approximately 12 knots). A backing distance of two shiplengths will give an impact speed of approximately 10.5 knots and one shiplength approximately 8.5 knots. There is not significant hull strain in the instrumented area of the bow when operating in level first year ice or broken channels"--Leaf [1].
Book Synopsis Resistance and Propulsive Performance Trials of the MV Terry Fox and MV Ikaluk in Level Ice by : D. N. Bruce Cowper
Download or read book Resistance and Propulsive Performance Trials of the MV Terry Fox and MV Ikaluk in Level Ice written by D. N. Bruce Cowper and published by [Montréal] : The Centre. This book was released on 1991 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis M.V. Terry Fox Level Ice Performance Trials by : Gulf Canada Resources Limited. Frontier Development Division
Download or read book M.V. Terry Fox Level Ice Performance Trials written by Gulf Canada Resources Limited. Frontier Development Division and published by . This book was released on 1985 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The major objective of the level ice performance trials was to assess the vessel's performance capabilities in level ice and first year ridges, [in order] to provide BeauDril with a better knowledge of the vessel's capabilities. The trials program took place concurrently with the M.V. Ikaluk, level ice performance trials, in early January 1984. Subsequent analysis of the trials results has led to the following conclusions: The vessel is capable of moving continuously through 1.5 metres (5 ft) of ice, and is likely to be capable of moving continuously through 1.6 to 1.8 metres (5.25 to 6 ft.) of level ice. The air bubbler system is effective in reducing ice resistance in level ice thicknesses greater than 0.5 metres. In ice thicknesses less than 0.5 metres, the bubbler system consumes power with no benefit. When ramming an ice feature at full power from a broken channel, it is inefficient to back further than three shiplengths (260 m) to obtain maximum impact speed (approximately 13 knots). A backing distance of two shiplengths will give an impact speed of approximately 11.5 knots and one shiplength approximately 9.0 knots. There is no significant hull strain in the instrumented areas of the bow when operating in level first year ice or broken channel. Average transitting speeds in first year ice, 0.8 metres thickness with ridge/rubble concentrations of 30% and 50% are 5 and 2.5 knots, respectively"--Leaf 1.
Book Synopsis Proceedings of the ... International Offshore Mechanics and Arctic Engineering Symposium by :
Download or read book Proceedings of the ... International Offshore Mechanics and Arctic Engineering Symposium written by and published by . This book was released on 1986 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Marine Technology and SNAME News written by and published by . This book was released on 1993 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering by :
Download or read book Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering written by and published by . This book was released on 1999 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transactions - The Society of Naval Architects and Marine Engineers by : Society of Naval Architects and Marine Engineers (U.S.)
Download or read book Transactions - The Society of Naval Architects and Marine Engineers written by Society of Naval Architects and Marine Engineers (U.S.) and published by . This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in vols. 1-24, 38-54, 57.
Book Synopsis Transactions of the Royal Institution of Naval Architects by : Royal Institution of Naval Architects
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Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications Du CDT by : Transportation Development Centre (Canada)
Download or read book Publications Du CDT written by Transportation Development Centre (Canada) and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Book Synopsis Full-scale Testing and Data Analysis of the Shaftline and Nozzle Dynamics in Ice on the M.V. Ikaluk by :
Download or read book Full-scale Testing and Data Analysis of the Shaftline and Nozzle Dynamics in Ice on the M.V. Ikaluk written by and published by . This book was released on 1990 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: