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- Concept Design Report Summary
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- Meet Scientific Mission
Requirements - Published 1999
- Larger More Capable Replacement for R/V Alpha Helix
- Year-round Operation in High Latitudes
- Year-round Operations in any Location in the Bering Sea
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- University of Alaska Fairbanks
- Vera Alexander, Chair
- Robert Elsner
- Thomas Smith
- Terry Whitledge
- Thomas Weingartner
- Woods Hole Oceanographic Institution
- Richard Pittenger
- Robertson Dinsmore
- Joe Coburn
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- Mike Reeve, National Science Foundation
- E.R. Dolly Dieter, National Science Foundation
- Knut Aagaard, Polar Science Center, Univ. of Washington
- Larry Atkinson, Center for Coastal Physical Oceanography, Old
Dominion University
- John Christensen, Bigelow Laboratory
- George Hunt, Dept. of Ecology and Evolutionary Biology, University
of California Irvine
- Suzanne Strom, Western Washington University
- James Meehan, National Marine Fisheries Service, NOAA
- Mike Prince, UNOLS
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- Concept Design Completed August 1
- Preliminary Design and Model Testing
- 3rd quarter 2001 to 1st quarter 2002
- Contract Design Complete by end of 2002
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- International Council for the Exploration of the Sea (ICES) Cooperative
Report #209 goal in SMR
- ICES acoustic levels incompatible with hull form and propulsion
system needed for operating in and around ice.
- Quiet propeller will be included and radiated noise to be as
low as practicable.
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- Low open water resistance versus ice capability
- Reamers and ice wedge add to resistance but improve ability
to work in and around ice.
- Trade-offs show added cost for ice capable features design does
include them.
- Power to be increased 10 to 15% to improve open water speed capability.
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- Seakeeping versus Ice Capability
- Trade-offs indicate ice capability features enhance seakeeping
ability.
- Simple bilge keels not practical in ice operations.
- Centerboard will be used for transducer mounts and to act as
roll damper.
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- Range and Endurance versus Vessel Size and Cost
- Endurance drives vessel size.
- Ship length overall 226 feet needed to meet SMR mission profile.
- SMR originally requested ship <200 feet.
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- Length, overall
... 226'-0"
- Length, design waterline
. 200'-0"
- Beam, maximum w/o reamer
. 48'-0"
- Beam, maximum w/ reamer
.. 52'-0"
- Draft, at design waterline
.. 18'-0"
- Depth, at amidships to main deck
29'-0"
- Displacement, at design waterline
.. 2,800 LTSW
- Total speed
. 14 knots
- Cruising speed
. 12 knots
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- Fuel capacity
... 148,000 gallons
- Ballast capacity
..
. 200,000 gallons
- Fresh water capacity
.. 4,300 gallons
- Range
.
.. 18,000 n.m. @ 12 knots
- Endurance overall
.. 45 days
- Provisions & human support consumable endurance
60 days
- Variable scientific equipment capacity
. 100 LT
- Level ice performance
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. 2.17 feet @ 2 knots
- Installed power
. 5000 HP
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- Vertical Acceleration (ref. SMR)
0.20g
- Roll (ref. Hosada 1985, Nordforsk)
3.0°
- Pitch (ref. Hosada 1985, Comstock)
1.5°
- Horizontal Acceleration (ref. SMR)
0.10g
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- Achieved
- Condition
- 9 knots Hs
13.12 feet worst period
- Effects measured at main deck, centerline, amidships (except vertical
acceleration at transom)
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- Ice Capability
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. ABS A1 Ice Class
- Level icebreaking performance
... 2.17' @ 2 knots
- Ridge Transit Performance
.. ~ 7 feet
- Installed Power
.. 5000 BHP (possibly 10% more)
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- Range
.. 18,000 nautical miles at 12 knots
- Endurance
45 day mission
- Icebreaking cruise drives full capacity
(ice cruise includes 10 days at 90% power)
- NOAA FRV 40 - Cruise profiles
exceeded
(45 days vs. 40 days)
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